CN109596564A - A kind of laser control device, array and control method - Google Patents
A kind of laser control device, array and control method Download PDFInfo
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Abstract
It includes laser, light splitting part, gas absorption cell, detector, drive module and controller that the present invention, which provides a kind of laser control device, array and control method, the control device,；The controller includes: digital sample module, for being sampled the electric signal received to obtain digital signal；Absorption peak analysis module, for obtaining the corresponding absorption peak of reference light according to the digital signal；Offset computing module, for comparing the corresponding absorption peak of the reference light and default absorption peak, be absorbed peak offset；The driving signal for generating driving signal according to the absorption peak offset, and is transmitted to the drive module by driving signal output module.The present invention provides the quantity by increasing laser can obtain any high-power laser, the wavelength that each laser projects can be based on feed back control system and be strictly controlled, so that it is guaranteed that the wavelength for the laser that the array that laser is constituted projects keeps height consistent.
Description
Technical field
The present invention relates to laser telemetry technical field more particularly to a kind of laser control devices, array and control method.
Background technique
TDLAS is the abbreviation of Tunable Diode Laser Absorption Spectroscopy, which is mainly
The characteristic changed using the narrow linewidth and wavelength of semiconductor laser with tunable with Injection Current is realized to the single or several of molecule
It is a to be measured apart from close very indistinguishable Absorption Line.Currently, generally requiring stronger transmitting laser in TDLAS application
Realize the requirement of higher performance index, such as in long range gas remote measurement device, stronger transmission power be can be realized more
Detection at a distance.There are mainly two types of the methods for improving laser emitting power at present:
(1) laser of more high emission optical power: the near-infrared for TDLAS being commercially available currently on the market is selected
The optical power of DM laser or Distributed Feedback Laser is no more than 20mW, can not provide the narrow line width regulatable of higher Output optical power
Laser.
(2) suitable driving current is injected to laser, so that it is emitted laser power maximum.But even if adjust laser
Driving current makes the driving maximum optical power of laser, also still cannot achieve the output more than 20mW or higher optical power, right
In the promotion limitation of power.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of laser control device, array and control methods, it is intended to
The device that a kind of pair of laser wavelength is able to carry out strict control is designed, and further obtains can break through device absolute rating limit
System dramatically increases the laser control array of transmitting laser power.
The present invention is realized with following technical solution:
A kind of laser control device, the control device include laser, the control device further include:
Light splitting part is set to the emitting light path of the laser, is detection by the laser beam splitter of the laser emitting
Light and reference light；
Gas absorption cell is set in the optical path where the reference light；
Detector, for receiving the reference light by the gas absorption cell；
Controller, the controller are connect with the detector；
Drive module, the driving signal for being exported according to the controller drive the laser；
The controller includes:
Digital sample module, for being sampled the electric signal received to obtain digital signal；
Absorption peak analysis module, for obtaining the corresponding absorption peak of reference light according to the digital signal；
Offset computing module is absorbed for comparing the corresponding absorption peak of the reference light and default absorption peak
Peak offset；
Driving signal output module for generating driving signal according to the absorption peak offset, and the driving is believed
Number it is transmitted to the drive module.
Further, the drive module includes current driver, and the current driver is used for defeated to the laser
Enter laser drive current.
Further, the driving signal output module includes:
First driving signal output unit, for calculating direct current biasing amount according to the absorption peak offset, and will be described
Direct current biasing amount is exported to the current driver；
The current driver includes:
External input unit, for obtaining external drive signal；
Offset signal input unit, for obtaining direct current biasing amount；
Driving current output unit drives for measuring laser according to the external drive signal and the direct current biasing
Streaming current, and the laser drive current is exported to the laser.
Further, the drive module includes temperature controller, and the temperature controller is used for defeated to the laser
Enter temperature control electric current.
Further, the driving signal output module includes:
Second driving signal output unit, for calculating desired temperature according to the absorption peak offset, and will be described
Desired temperature is exported to the temperature controller；
The temperature controller includes:
Temperature setting unit, for obtaining the desired temperature of the second driving signal output unit output；
Temperature control current output unit, for being exported according to the temperature of the desired temperature and laser to the laser
Temperature control electric current.
Further, the laser further includes temperature sensor, for obtaining laser temperature；
The temperature controller further includes feedback temperature acquiring unit, and the feedback temperature acquiring unit and the temperature pass
Sensor connection；
The temperature controller further include:
Comparator, for obtaining the difference of the desired temperature and the laser temperature；
The temperature control current output unit is also used to export temperature control electric current according to the difference.
Further, the temperature control current output unit further includes TEC temperature control driver, the TEC temperature control
Driver is used to export TEC driving current to the laser.
Further, the drive module includes:
Current driver, the current driver are used to input laser drive current to the laser；
Temperature controller, the temperature controller are used to input temperature control electric current to the laser；
The driving signal output module includes:
First driving signal output unit, for calculating direct current biasing amount according to the absorption peak offset, and will be described
Direct current biasing amount is exported to the current driver；
Second driving signal output unit, for calculating desired temperature according to the absorption peak offset, and will be described
Desired temperature is exported to the temperature controller；
Comparing unit, for judging the first driving signal output unit of starting and/or the according to the absorption peak offset
Two driving signal output unit.
Further, the optical window normal of the gas absorption cell and laser beam axis angle are 5 ° -45 °；
The normal and laser beam axis angle of the photosurface of the detector are 5 ° -45 °.
A kind of laser control array, including multiple above-mentioned laser control devices.
A kind of laser Control Method is executed by a kind of above-mentioned laser control device, comprising:
Obtain the digital signal of the reference light by gas absorption cell；
The corresponding absorption peak of reference light is obtained according to the digital signal；
The corresponding absorption peak of the reference light and default absorption peak are compared, be absorbed peak offset；
Driving signal is generated according to the absorption peak offset；
The laser is driven according to the driving signal.
Further, it is described according to the absorption peak offset generate driving signal include: according to the absorption peak deviate
Amount calculates direct current biasing amount；
It is described to include: according to the driving signal driving laser of controller output
Obtain external drive signal；
Obtain the direct current biasing amount；
Laser drive current is measured according to the external drive signal and the direct current biasing, and by the laser
Driving current is exported to the laser.
Further, it is described according to the absorption peak offset generate driving signal include: according to the absorption peak deviate
Amount calculates desired temperature；
It is described to include: according to the driving signal driving laser of controller output
Obtain the desired temperature；
Temperature control electric current is exported to the laser according to the temperature of the desired temperature and laser.
The beneficial effects of the present invention are:
A kind of laser control device, array and control method provided by the invention, have the following beneficial effects:
(1) feed back control system for controlling laser is devised, it can be from current control and temperature controlled angle
The wavelength for the laser that laser projects is controlled；
(2) a kind of laser control array is provided, the quantity by increasing laser can obtain any high-power
Laser, the wavelength that each laser projects can be based on feed back control system and be strictly controlled, so that it is guaranteed that laser structure
At array project laser wavelength keep height it is consistent.
Detailed description of the invention
Fig. 1 (1) is the first laser array schematic diagram provided by the invention；
Fig. 1 (2) is second of laser array schematic diagram provided by the invention；
Fig. 2 (1) is the first laser control device schematic diagram provided in an embodiment of the present invention；
Fig. 2 (2) is second of laser control device schematic diagram provided in an embodiment of the present invention；
Fig. 3 is controller block diagram provided in an embodiment of the present invention；
Fig. 4 (1) is the optical signal schematic diagram provided in an embodiment of the present invention after gas absorption cell；
Fig. 4 (2) is the optical signal schematic diagram under no gas absorbing state provided in an embodiment of the present invention；
Fig. 5 is current driver block diagram provided in an embodiment of the present invention；
Fig. 6 is temperature controller block diagram provided in an embodiment of the present invention；
Fig. 7 is control method flow chart provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.
The limitation that can break through device absolute rating using laser array, by increasing number of lasers, needed for acquisition
Any high-power laser wanted, as shown in Fig. 1 (1), however, by TDLAS technical requirements, in the laser array of Fig. 1 (1)
The wavelength of each laser must keep strict conformance.By carrying out independent and accurate control to each laser in the embodiment of the present invention
System, realizes the consistent purpose of all laser wavelengths.It, can also will be each as shown in Fig. 1 (2) in addition, in embodiments of the present invention
The light that a laser issues carries out conjunction beam by optical-fiber bundling device, to obtain high-power laser.
Specifically, each laser is accurately controlled in order to realize, the embodiment of the present invention mentions each laser
A kind of laser control device is supplied, the control device includes laser, the control device further include:
Light splitting part is set to the emitting light path of the laser, is detection by the laser beam splitter of the laser emitting
Light and reference light；
Gas absorption cell is set in the optical path where the reference light；
Detector, for receiving the reference light by the gas absorption cell；
Controller, the controller are connect with the detector；
Drive module, the driving signal for being exported according to the controller drive the laser.
Specifically, it please refers to Fig. 2 (1), the light splitting part can be spectroscope, please refer to Fig. 2 (2), the spectrum part
Part may be optical fiber.When using optical fiber as light splitting part, by y-type optical fiber by laser beam splitter to detect light and reference light,
It detects light to project by the output optical fiber, reference light injects gas absorption cell by reference to optical fiber and optical fiber collimator.
The controller is as shown in Figure 3, comprising:
Digital sample module 1, for being sampled the electric signal received to obtain digital signal.
Absorption peak analysis module 2, for obtaining the corresponding absorption peak of reference light according to the digital signal.
Offset computing module 3 is absorbed for comparing the corresponding absorption peak of the reference light and default absorption peak
Peak offset.
Driving signal output module 4 for generating driving signal according to the absorption peak offset, and the driving is believed
Number it is transmitted to the drive module.
The laser that laser emits in the embodiment of the present invention is divided into two beam laser: emergent light, reference light through light splitting part, point
Light component generally requires plating anti-reflection film, so that emergent light light intensity is the hundred times of reference light to thousands of times.Reference light is used to monitor
The wavelength of emergent light.After reference light passes through gas absorption cell, the light of specific wavelength can be absorbed by gas-selectively, carried gas and inhaled
The reference light ceased of collecting mail is received by a detector.
Light intensity signal is converted to electric signal and is sent to controller by detector, and controller can receive external trigger letter
Electrical signal collection then analyzes digital signal at data-signal after number, so that it is determined that the position of absorption peak and absorption
Peak offset, and then driving signal is obtained, to realize for the feedback control of the laser issued in laser.
Specifically, the optical window normal of the gas absorption cell and laser beam axis angle are 5 ° -45 °；The detector
Photosurface normal and laser beam axis angle be 5 ° -45 °.
Fig. 4 (1) shows the optical signal after gas absorption cell, and Fig. 4 (2) shows the light under no gas absorbing state
Signal.Optical signals detector direct detection after gas absorbs obtains, and the optical signal that no gas absorbs can be by directly visiting
It surveys or data fitting obtains, by the optical signal after comparing the optical signal absorbed without gas and thering is gas to absorb, can obtain
Gas absorbs peak-to-peak signal, to obtain the position of absorption peak.
In a kind of feasible embodiment, the optical signal after can also absorbing to gas carries out derivation, to exclude light
Laser intensity information in strong signal obtains the harmonic signal that gas absorbs peak-to-peak signal, passes through peak-seeking or zero point algorithm, Ke Yizhi
Obtain to obtain gas absorption peak position.Gas concentration is measured according to Harmonic Method, the optical signal after absorbing to gas carries out locking phase
Amplification can be obtained the harmonic signal of gas absorption signal, directly obtains gas by peak-seeking or zero point algorithm and absorbs peak position
It sets.
Controller in the embodiment of the present invention draws close the position of absorption peak to predeterminated position based on feedback control principle,
Until the small requirement accurately controlled to satisfaction for laser wavelength of absorption peak offset.Correspondingly, swashing what laser was constituted
In light device array, each laser will be adjusted to predeterminated position with reference to optical absorption peak position using the above process, to realize institute
There is the reference light wavelength of laser to be consistent, that is, outgoing light wavelength is consistent, has also just reached and utilized laser battle array
The purpose of column improving laser transmission power.
In a kind of feasible embodiment, controller can be by being converted to laser driving electricity for absorption peak offset
The mode of stream direct current biasing amount carries out feedback control.
Specifically, the drive module includes current driver, and the current driver is used to input to the laser
Laser drive current.
The driving signal output module includes:
First driving signal output unit, for calculating direct current biasing amount according to the absorption peak offset, and will be described
Direct current biasing amount is exported to the current driver；
The current driver is as shown in Figure 5, comprising:
External input unit 10, for obtaining external drive signal.
Offset signal input unit 20, for obtaining direct current biasing amount.
Driving current output unit 30, for measuring laser according to the external drive signal and the direct current biasing
Driving current, and the laser drive current is exported to the laser.
In the embodiment, external drive signal is added direct current biasing amount by current driver, after then will add up
Signal be converted to the driving current of laser.In this way external drive electric current may be implemented laser wavelength in certain wavelength model
Enclose interior scanning, and the position of the adjustable length scanning of direct current biasing amount, to realize absorption peak by direct current biasing amount
Position adjustment, it is ensured that the stabilization of the wavelength for the laser that laser issues.
In another feasible embodiment, controller can be by being converted to laser temperature for absorption peak offset
The mode of setting value carries out feedback control.
The drive module includes temperature controller, and the temperature controller is used for laser input temperature control electricity
Stream.
The driving signal output module includes:
Second driving signal output unit, for calculating desired temperature according to the absorption peak offset, and will be described
Desired temperature is exported to the temperature controller.
The temperature controller is as shown in Figure 6, comprising:
Temperature setting unit 100, for obtaining the desired temperature of the second driving signal output unit output；
Temperature control current output unit 200, for according to the temperature of the desired temperature and laser to the laser
Export temperature control electric current.
In order to promote the accuracy for laser temperature control, in one embodiment, the laser further includes temperature
Sensor is spent, for obtaining laser temperature；
The temperature controller further includes feedback temperature acquiring unit 300, the feedback temperature acquiring unit and the temperature
It spends sensor and connects
The temperature controller further include:
Comparator 400, for obtaining the difference of the desired temperature and the laser temperature；
The temperature control current output unit 200 is also used to export temperature control electric current according to the difference.Specifically, it is based on difference
The mode controlled can be PID or other control modes.
Specifically, the temperature control current output unit can control driver for TEC temperature, and the TEC temperature control is driven
Dynamic device exports TEC driving current to the laser.
In the embodiment, temperature controller can lead to by temperature sensor come the Current Temperatures of feedback laser
Change TEC driving current is crossed to control the temperature of laser.Thus laser can be realized by changing the temperature of laser
The wavelength change of device, similarly can also realize absorption peak position adjustment, it is ensured that laser issue laser wavelength it is steady
It is fixed.
In another feasible embodiment, controller can be adaptively selected using different anti-according to the actual situation
Present control mode.
Specifically, the drive module includes:
Current driver, the current driver are used to input laser drive current to the laser；
Temperature controller, the temperature controller are used to input temperature control electric current to the laser；
The driving signal output module includes:
First driving signal output unit, for calculating direct current biasing amount according to the absorption peak offset, and will be described
Direct current biasing amount is exported to the current driver；
Second driving signal output unit, for calculating desired temperature according to the absorption peak offset, and will be described
Desired temperature is exported to the temperature controller；
Comparing unit, for judging the first driving signal output unit of starting and/or the according to the absorption peak offset
Two driving signal output unit.
In said embodiment, the controller can be used according to the adaptive selection of the difference of absorption peak offset
Different feedback control accesses.In a kind of feasible embodiment, when offset is smaller, pass through add drop driving current
Direct current biasing component adjusts the position of absorption peak；When offset is larger, by adjusting the temperature of laser, absorbed to adjust
The position at peak.
Further, for the laser array in the embodiment of the present invention, each laser is by a laser
Control device strict control, a laser control device are to constitute the module of an independent action of laser array, mould
The design of block can maximize the degree of coupling for reducing array.Further, each laser control device can pass through change
Temperature and/or the mode for changing driving current carry out independent accurate modulation to the wavelength of laser, and can meet narrow linewidth
It is required that so that the laser activity for guaranteeing that each laser in laser array issues is good, and wavelength strict conformance, thus
Ensure the performance of laser array.Certainly, laser array can obtain any high power by increasing the quantity of laser
Laser.
Another embodiment of the present invention provides a kind of laser Control Method, can be filled by above-mentioned laser control
Execution is set, as shown in fig. 7, comprises:
S1. the digital signal of the reference light by gas absorption cell is obtained.
S2. the corresponding absorption peak of reference light is obtained according to the digital signal.
S3. the corresponding absorption peak of the reference light and default absorption peak are compared, be absorbed peak offset.
S4. driving signal is generated according to the absorption peak offset.
S5. the laser is driven according to the driving signal.
In a kind of feasible embodiment, it is described according to the absorption peak offset generate driving signal include: basis
The absorption peak offset calculates direct current biasing amount；
Correspondingly, described include: according to the driving signal driving laser of controller output
Obtain external drive signal；
Obtain the direct current biasing amount；
Laser drive current is measured according to the external drive signal and the direct current biasing, and by the laser
Driving current is exported to the laser.
In another feasible embodiment, described to generate driving signal according to the absorption peak offset include: root
Desired temperature is calculated according to the absorption peak offset；
Correspondingly, described include: according to the driving signal driving laser of controller output
Obtain the desired temperature；
Temperature control electric current is exported to the laser according to the temperature of the desired temperature and laser.
Certainly, both embodiments can be used alone or be superimposed use.
Embodiment of the present invention method is based on identical inventive concept with Installation practice, is specifically detailed in Installation practice.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, such as this hair
As bright claims reflect, inventive aspect is all features less than single embodiment disclosed above.Cause
This, it then follows thus claims of specific embodiment are expressly incorporated in the specific embodiment, wherein each claim
Itself is all as a separate embodiment of the present invention.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although embodiment described herein includes institute in other embodiments
Including certain features rather than other feature, but the combination of the feature of different embodiment means in the scope of the present invention
Within and form different embodiments.For example, in claims of the present invention, embodiment claimed it is any
One of can in any combination mode come using.
The present invention be also implemented as some or all equipment for executing method as described herein or
System program (such as computer program and computer program product).It is such to realize that program of the invention can store in computer
On readable medium, or it may be in the form of one or more signals.Such signal can be above and below internet website
Load obtains, and can also be provided on the carrier signal, or be provided in any other form.
It should be noted that above-described embodiment is that illustrate the present invention rather than limit it, and
Those skilled in the art can be designed alternative embodiment without departing from the scope of the appended claims.In claim
In, any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" is not excluded for depositing
In elements or steps etc. not listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of more
A such element.The present invention can be by means of including the hardware of several different elements and by means of properly programmed calculating
Machine is realized.If several in these systems can be by same in the unit claim for listing dry systems
Hardware branch embodies.The use of word first, second and third etc. does not indicate any sequence, can explain these words
For title.
Claims (13)
1. a kind of laser control device, the control device includes laser, which is characterized in that the control device also wraps
It includes:
Light splitting part is set to the emitting light path of the laser, by the laser beam splitter of the laser emitting be detection light and
Reference light；
Gas absorption cell is set in the optical path where the reference light；
Detector, for receiving the reference light by the gas absorption cell；
Controller, the controller are connect with the detector；
Drive module, the driving signal for being exported according to the controller drive the laser；
The controller includes:
Digital sample module, for being sampled the electric signal received to obtain digital signal；
Absorption peak analysis module, for obtaining the corresponding absorption peak of reference light according to the digital signal；
Offset computing module, for comparing the corresponding absorption peak of the reference light and default absorption peak, the peak that is absorbed is inclined
Shifting amount；
Driving signal output module for generating driving signal according to the absorption peak offset, and the driving signal is passed
Transport to the drive module.
2. a kind of laser control device according to claim 1, it is characterised in that:
The drive module includes current driver, and the current driver is used for laser input laser driving electricity
Stream.
3. a kind of laser control device according to claim 2, it is characterised in that:
The driving signal output module includes:
First driving signal output unit, for calculating direct current biasing amount according to the absorption peak offset, and by the direct current
Amount of bias is exported to the current driver；
The current driver includes:
External input unit, for obtaining external drive signal；
Offset signal input unit, for obtaining direct current biasing amount；
Driving current output unit, for measuring laser driving electricity according to the external drive signal and the direct current biasing
Stream, and the laser drive current is exported to the laser.
4. a kind of laser control device according to claim 1, it is characterised in that:
The drive module includes temperature controller, and the temperature controller is used to input temperature control electric current to the laser.
5. a kind of laser control device according to claim 4, it is characterised in that:
The driving signal output module includes:
Second driving signal output unit, for calculating desired temperature according to the absorption peak offset, and by the temperature
Setting value is exported to the temperature controller；
The temperature controller includes:
Temperature setting unit, for obtaining the desired temperature of the second driving signal output unit output；
Temperature control current output unit, for exporting temperature control to the laser according to the temperature of the desired temperature and laser
Electric current.
6. a kind of laser control device according to claim 5, it is characterised in that:
The laser further includes temperature sensor, for obtaining laser temperature；
The temperature controller further includes feedback temperature acquiring unit, the feedback temperature acquiring unit and the temperature sensor
Connection；
The temperature controller further include:
Comparator, for obtaining the difference of the desired temperature and the laser temperature；
The temperature control current output unit is also used to export temperature control electric current according to the difference.
7. a kind of laser control device according to claim 6, it is characterised in that:
The temperature control current output unit further includes TEC temperature control driver, and the TEC temperature control driver is used for institute
State laser output TEC driving current.
8. a kind of laser control device according to claim 1, it is characterised in that:
The drive module includes:
Current driver, the current driver are used to input laser drive current to the laser；
Temperature controller, the temperature controller are used to input temperature control electric current to the laser；
The driving signal output module includes:
First driving signal output unit, for calculating direct current biasing amount according to the absorption peak offset, and by the direct current
Amount of bias is exported to the current driver；
Second driving signal output unit, for calculating desired temperature according to the absorption peak offset, and by the temperature
Setting value is exported to the temperature controller；
Comparing unit, for judging the first driving signal output unit of starting and/or the second drive according to the absorption peak offset
Dynamic signal output unit.
9. a kind of laser control device according to claim 1, it is characterised in that:
The optical window normal and laser beam axis angle of the gas absorption cell are 5 ° -45 °；
The normal and laser beam axis angle of the photosurface of the detector are 5 ° -45 °.
10. a kind of laser control array, it is characterised in that:
Including laser control device described in multiple claims 1.
11. a kind of laser Control Method, it is characterised in that: the method is one as described in any one of claim 1-9
Kind laser control device executes, comprising:
Obtain the digital signal of the reference light by gas absorption cell；
The corresponding absorption peak of reference light is obtained according to the digital signal；
The corresponding absorption peak of the reference light and default absorption peak are compared, be absorbed peak offset；
Driving signal is generated according to the absorption peak offset；
The laser is driven according to the driving signal.
12. a kind of laser Control Method according to claim 11, it is characterised in that:
It is described according to the absorption peak offset generate driving signal include: according to the absorption peak offset calculate direct current biasing
Amount；
It is described to include: according to the driving signal driving laser of controller output
Obtain external drive signal；
Obtain the direct current biasing amount；
Laser drive current is measured according to the external drive signal and the direct current biasing, and the laser is driven
Electric current is exported to the laser.
13. a kind of laser Control Method according to claim 11, it is characterised in that:
It is described according to the absorption peak offset generate driving signal include: according to the absorption peak offset calculate temperature setting
Value；
It is described to include: according to the driving signal driving laser of controller output
Obtain the desired temperature；
Temperature control electric current is exported to the laser according to the temperature of the desired temperature and laser.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190573.XA CN109596564A (en) | 2018-10-12 | 2018-10-12 | A kind of laser control device, array and control method |
| PCT/CN2019/110759 WO2020074000A1 (en) | 2018-10-12 | 2019-10-12 | Laser array element, array, and device for realizing received light intensity self-stabilization on the basis of array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190573.XA CN109596564A (en) | 2018-10-12 | 2018-10-12 | A kind of laser control device, array and control method |
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| Publication Number | Publication Date |
|---|---|
| CN109596564A true CN109596564A (en) | 2019-04-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811190573.XA Pending CN109596564A (en) | 2018-10-12 | 2018-10-12 | A kind of laser control device, array and control method |
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Cited By (4)
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| WO2020074000A1 (en) * | 2018-10-12 | 2020-04-16 | 上海禾赛光电科技有限公司 | Laser array element, array, and device for realizing received light intensity self-stabilization on the basis of array |
| CN113607687A (en) * | 2021-09-17 | 2021-11-05 | 清华大学 | Single-ended diffuse reflection multi-component measurement system based on gas absorption spectrum |
| CN113655031A (en) * | 2021-08-02 | 2021-11-16 | 南京泰晟科技实业有限公司 | Automobile harmful gas detection system and method thereof |
| CN113922915A (en) * | 2021-09-03 | 2022-01-11 | 烽火通信科技股份有限公司 | Automatic wavelength deviation rectifying method for DML optical module, DML optical module and DWDM system |
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