CN107359498A - A kind of laser signal generator - Google Patents
A kind of laser signal generator Download PDFInfo
- Publication number
- CN107359498A CN107359498A CN201710803824.6A CN201710803824A CN107359498A CN 107359498 A CN107359498 A CN 107359498A CN 201710803824 A CN201710803824 A CN 201710803824A CN 107359498 A CN107359498 A CN 107359498A
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- CN
- China
- Prior art keywords
- laser
- signal acquisition
- control device
- drive circuit
- signal generator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
- H01S5/06837—Stabilising otherwise than by an applied electric field or current, e.g. by controlling the temperature
Abstract
The present invention relates to laser technology field,Especially a kind of laser signal generator,Including input unit,Display device,Signal acquisition and control device,Generating device of laser and optical measurement instrument,The input of the input unit connection signal acquisition and control device,The output end of the display device connection signal acquisition and control device,Input unit carries out preset value setting to signal acquisition and control device and controlled,Display device shows the detection signal and processing data of signal acquisition and control device output,The output end of the generating device of laser connection signal acquisition and control device,The normal operation of generating device of laser is controlled by signal acquisition and control device,The input of the optical measurement instrument connection signal acquisition and control device,By being detected and being obtained to generating device of laser in detection signal input signal acquisition control device,The laser signal generator service life length of the present invention,Operational effect is stable.
Description
Technical field
The present invention relates to laser technology field, specific field is a kind of laser signal generator.
Background technology
Signal generator is a kind of equipment that can provide various frequencies, waveform and output level electric signal.It is used to produce
The electric test signal of special parameter needed for circuit-under-test.In test, research or adjustment electronic circuit and equipment, to determine circuit
Some electric parameters, such as measurement frequency response, noise coefficient, spend surely for voltmeter, require that offer meets determined technology bar
The electric signal of part, to simulate the pumping signal of the Devices to test used in real work.
Laser signal generator is a kind of equipment for the laser signal for providing assigned frequency, specific wavelength and energy.He uses
Laser testing signal required for tested photoelectric device is produced.In the electricity of test, research and debugging photoelectric device correlation
When road and equipment, to determine some parameters of circuit, such as sensitivity of measurement response, response wave length, peak response, response frequency
Deng parameter, it is desirable to provide the optical signal of response, after device is changed, the electric signal by measuring final output is realized final
Measurement.
The main performance requirements of laser signal generator have：Irradiation distance with enough power and farther out；It is sufficiently small
Laser divergence angle；Axle and laser axis are taken aim in irradiator sight will good collimation.Influence the performance of laser signal generator
Principal element has：Optical maser wavelength, the energy of unit pulse, repetition rate, pulse width, the reflectivity of target, air (weather)
Influence, size of target etc..
Existing laser signal generator can export the laser of varying strength, and the intensity of laser is carried out really according to calibration value
Fixed, laser energy needs periodic calibrating.It is affected by environment larger during the use of laser signal generator, easily cause energy
Drift and spectral drift.
Existing laser signal generator is mainly by groups such as semiconductor laser, laser drive circuit, input unit, shells
Into.Core devices are semiconductor lasers, and laser drive circuit receives the various settings of input unit, then controls semiconductor to swash
Light device exports laser.
The content of the invention
It is an object of the invention to provide a kind of laser signal generator, and with solution, service life is short in the prior art, fortune
The problem of row effect is unstable.
To achieve the above object, the present invention provides following technical scheme：A kind of laser signal generator, including input dress
Put, display device, signal acquisition and control device, generating device of laser and optical measurement instrument, the input unit connection signal are adopted
Collect the input of control device, the output end of the display device connection signal acquisition and control device, input unit is adopted to signal
Collection control device carries out preset value setting and controlled, and display device shows detection signal and the place of signal acquisition and control device output
Data are managed, the output end of the generating device of laser connection signal acquisition and control device, are controlled by signal acquisition and control device
The normal operation of generating device of laser, the input of the optical measurement instrument connection signal acquisition and control device, by laser
Generating means is detected and obtained in detection signal input signal acquisition control device.
Preferably, the generating device of laser includes laser drive circuit, temperature control drive circuit, semiconductor laser, PTC
Piece, temperature sensor, light-dividing device and lens group, the laser drive circuit and temperature control drive circuit connect signal acquisition respectively
The output end of control device, the output end of the semiconductor laser connection laser drive circuit, the PTC pieces connection temperature control are driven
The output end of dynamic circuit, the input of the temperature sensor connection temperature control drive circuit, the light-dividing device is arranged on corresponding
Coordinate at semiconductor laser, and with semiconductor laser, the lens group is equipped with corresponding to light-dividing device.
Preferably, the laser drive circuit is narrow-pulse laser drive integrated circult.
Preferably, the temperature control drive circuit is cold and hot two-way PTC Temperature Controlling Chips.
Preferably, the light-dividing device is Amici prism.
Preferably, the optical measurement instrument is the spectrometer with measuring light power, and spectrometer, which corresponds at light-dividing device, to be set
Put, the optical measurement instrument (5) can also be the light power meter and spectrometer to cooperate.
Preferably, the input unit includes touch-screen, key board and mouse, touch-screen, key board and mouse point
Not Lian Jie signal acquisition and control device input.
Preferably, the display device is LCD display, dot matrix display screen or digital display tube.
Preferably, the signal acquisition and control device is computation processor.
Preferably, the PTC pieces are the two-way cooling pieces of PTC.
Compared with prior art, the beneficial effects of the invention are as follows：1st, by being monitored to the closed loop of Output optical power, feedback control
Laser driver processed, the accurate of Output optical power is finally reached, and is not influenceed by semiconductor laser temperature, aging shadow
Ring；
2nd, by the monitoring to output spectrum, feedback control laser driver, the accurate of output spectrum center is finally reached,
And do not influenceed by semiconductor laser temperature, aging influences；
3rd, by the feedback control to power and spectrum, make signal generator output spectrum and energy accurate, finally can
The detection to laser pickoff sensitivity is realized, realizes quantitative analysis, rather than existing simple qualitative analysis so that is being swashed
In the production of optical receiver, assembling process can accurate quantitative analysis product sensitivity, detect the quality of product.
Brief description of the drawings
Fig. 1 is the system principle diagram of the present invention；
In figure：1st, input unit；2nd, display device；3rd, signal acquisition and control device；4th, generating device of laser；5th, photo measure
Device；6th, laser drive circuit；7th, temperature control drive circuit；8th, semiconductor laser；9th, PTC pieces；10th, temperature sensor；11st, divide
Electro-optical device；12nd, lens group.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme：A kind of laser signal generator, including it is input unit 1, aobvious
Showing device 2, signal acquisition and control device 3, generating device of laser 4 and optical measurement instrument 5, the input unit 1 connect signal and adopted
Collect the input of control device 3, the display device 2 connects the output end of signal acquisition and control device 3, and input unit 1 is to letter
Number acquisition control device 3 carries out preset value setting and controlled, and display device 2 shows the detection that signal acquisition and control device 3 exports
Signal and processing data, the generating device of laser 4 connect the output end of signal acquisition and control device 3, pass through signal acquisition control
Device 3 processed controls the normal operation of generating device of laser 4, and the optical measurement instrument 5 connects the input of signal acquisition and control device 3
End, by being detected and being obtained in detection signal input signal acquisition control device 3 to generating device of laser 4.
The generating device of laser 4 includes laser drive circuit 6, temperature control drive circuit 7, semiconductor laser 8, PTC pieces
9th, temperature sensor 10 (temperature sensor 10 is the internal temperature sensor 10 encapsulated together with semiconductor laser 8), light splitting
Device 11 and lens group 12, the laser drive circuit 6 and temperature control drive circuit 7 connect signal acquisition and control device 3 respectively
Output end, the semiconductor laser 8 connect the output end of laser drive circuit 6, and the PTC pieces 9 connect temperature control drive circuit 7
Output end, the temperature sensor 10 connects the input of temperature control drive circuit 7, the light-dividing device 11 be arranged on it is corresponding with
At semiconductor laser 8, and coordinate with semiconductor laser 8, the lens group 12 is equipped with corresponding to light-dividing device 11, is led to
The size of adjustment output facula can be realized by crossing adjustment focal length.
The laser drive circuit 6 is narrow-pulse laser drive integrated circult, and predominantly the narrow-pulse laser of ns ranks drives
Dynamic circuit 6, the laser drive circuit 6 have data-interface, can carry out laser optical power, pulse frequency etc. by data-interface and match somebody with somebody
Put.
The temperature control drive circuit 7 is cold and hot two-way PTC Temperature Controlling Chips, and temperature control drive circuit 7 is that the two-way cooling pieces of PTC are special
Drive circuit, temperature sensor 10 can be coordinated to complete the two-way accurate temperature control of cooling and warming to PTC pieces 9.Temperature control drives
Circuit 7 has data-interface, and the equilibrium temperature of PTC pieces 9 can be adjusted by data-interface.
The light-dividing device 11 is Amici prism, realizes the accurate light splitting of laser energy, is easy to optical measurement instrument 5 to be surveyed
Amount, light-dividing device 11 can be single prism or prism group.
The optical measurement instrument 5 is the spectrometer with measuring light power, can measure laser spectrum and energy, spectrometer pair
It should be set at light-dividing device, the optical measurement instrument (5) can also be the light power meter and spectrometer to cooperate,.
The input unit 1 include touch-screen, key board (key board include function key, up and down directionkeys, really
Recognize key and laser switch key) and mouse, touch-screen, key board and mouse connect the input of signal acquisition and control device 3 respectively
End.
The display device 2 is LCD display (7 cun of LCD), dot matrix display screen or digital display tube, for showing currently
Running status include the curve of spectrum, Output optical power, arrange parameter etc..
The signal acquisition and control device 3 is computation processor, is mainly made up of the embedded industry control boards of arm, and have
There is external synchronizing signal output interface.Major control laser drive circuit 6, temperature control drive circuit 7, optical measurement instrument 5, pass through
To the cooperation of each circuit and device, to complete overall function.
The PTC pieces 9 are the two-way cooling pieces of PTC.
By the technical program, 1, the luminous power exported by keyboard setting needs and wavelength；
2nd, temperature, driving PTC two-way system of the signal pickup assembly according to the temperature acquisition temperature sensor 10 of initial preset
Cold, the temperature of semiconductor laser 8 is set to reach preset value；
3rd, the laser of luminous power and wavelength is specified in the output of signal control device control semiconductor laser 8；
4th, light-dividing device 11 exports part light splitting to the lens group 12 that laser emits, a part to photo measure
The spectrometer of device 5 measures；
5th, the laser power and the curve of spectrum of the spectrometer measurement light splitting part of optical measurement instrument 5.And by measurement result
It is sent to signal collecting and controlling device；
6th, signal collecting and controlling device is analyzed the curve of spectrum, calculates actual spectrum center and theoretical center
Offset.Calculate the luminous power of final output and the skew of theoretical luminous power.By two offsets again to Laser Driven electricity
Road 6 and temperature control drive circuit 7 enter line displacement adjustment；
7th, the luminous power and wavelength of said process, dynamic monitoring and adjustment final output are repeated.Reach Output optical power and
The stabilization of optical wavelength.
1st, by being monitored to the closed loop of Output optical power, feedback control laser driver, it is finally reached Output optical power
Accurately, and not influenceed by the temperature of semiconductor laser 8, aging influences；
2nd, by the monitoring to output spectrum, feedback control laser driver, the accurate of output spectrum center is finally reached,
And do not influenceed by the temperature of semiconductor laser 8, aging influences；
3rd, by the feedback control to power and spectrum, make signal generator output spectrum and energy accurate, finally can
The detection to laser pickoff sensitivity is realized, realizes quantitative analysis, rather than existing simple qualitative analysis so that is being swashed
In the production of optical receiver, assembling process can accurate quantitative analysis product sensitivity, detect the quality of product.
1st, laser signal generator of the invention, by the way that by built in energy measurement and spectral measurement function, device is in itself
Can carry out
2nd, laser signal generator of the invention, it is no longer necessary to which frequently energy calibration and spectral measurement, output characteristics are steady
It is fixed.
3rd, laser signal generator of the invention, stable output power, output spectrum is stable, can be to laser pickoff
Sensitivity measure realizes quantitative analysis
4th, laser signal generator of the invention belongs to miniature instrument, easily can move and measure, be easy to production and
Detection uses.
5th, the invention of laser signal generator of the invention, can be accurate in the production, assembling process in laser pickoff
Quantitative analysis product sensitivity, detect the quality of product, it is significant
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
- A kind of 1. laser signal generator, it is characterised in that：Including input unit (1), display device (2), signal acquisition control Device (3), generating device of laser (4) and optical measurement instrument (5), input unit (1) the connection signal acquisition and control device (3) Input, the output end of the display device (2) connection signal acquisition and control device (3), input unit (1) is to signal acquisition Control device (3) carries out preset value setting and controlled, and display device (2) shows the detection of signal acquisition and control device (3) output Signal and processing data, the output end of generating device of laser (4) the connection signal acquisition and control device (3), are adopted by signal Collect the normal operation of control device (3) control generating device of laser (4), optical measurement instrument (5) the connection signal acquisition control The input of device (3), filled by the way that detection signal input signal acquisition control is detected and obtained to generating device of laser (4) Put in (3).
- A kind of 2. laser signal generator according to claim 1, it is characterised in that：Generating device of laser (4) bag Include laser drive circuit (6), temperature control drive circuit (7), semiconductor laser (8), PTC pieces (9), temperature sensor (10), point Electro-optical device (11) and lens group (12), the laser drive circuit (6) and temperature control drive circuit (7) connect signal acquisition control respectively The output end of device (3) processed, the output end of semiconductor laser (8) the connection laser drive circuit (6), the PTC pieces (9) Connect the output end of temperature control drive circuit (7), the input of temperature sensor (10) the connection temperature control drive circuit (7), institute State light-dividing device (11) and be arranged on corresponding and semiconductor laser (8) place, and coordinate with semiconductor laser (8), the camera lens Group (12) is equipped with corresponding to light-dividing device (11).
- A kind of 3. laser signal generator according to claim 2, it is characterised in that：The laser drive circuit (6) is Narrow-pulse laser drive integrated circult.
- A kind of 4. laser signal generator according to claim 2, it is characterised in that：The temperature control drive circuit (7) is Cold and hot two-way PTC Temperature Controlling Chips.
- A kind of 5. laser signal generator according to claim 2, it is characterised in that：The light-dividing device (11) is light splitting Prism.
- A kind of 6. laser signal generator according to claim 2, it is characterised in that：The optical measurement instrument (5) is band The spectrometer of measuring light power, spectrometer, which corresponds at light-dividing device, to be set, and the optical measurement instrument (5) can also be to cooperate Light power meter and spectrometer.
- A kind of 7. laser signal generator according to claim 1, it is characterised in that：The input unit (1) includes touching Screen, key board and mouse are touched, touch-screen, key board and mouse connect the input of signal acquisition and control device (3) respectively.
- A kind of 8. laser signal generator according to claim 1, it is characterised in that：The display device (2) shows for LCD Display screen, dot matrix display screen or digital display tube.
- A kind of 9. laser signal generator according to claim 1, it is characterised in that：The signal acquisition and control device (3) it is computation processor.
- A kind of 10. laser signal generator according to claim 2, it is characterised in that：The PTC pieces (9) are that PTC is two-way Cooling piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803824.6A CN107359498A (en) | 2017-09-08 | 2017-09-08 | A kind of laser signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803824.6A CN107359498A (en) | 2017-09-08 | 2017-09-08 | A kind of laser signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107359498A true CN107359498A (en) | 2017-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710803824.6A Pending CN107359498A (en) | 2017-09-08 | 2017-09-08 | A kind of laser signal generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429466A (en) * | 2019-06-24 | 2019-11-08 | 东莞理工学院 | A kind of high-power semiconductor laser real-time detecting system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300419A (en) * | 2015-12-03 | 2016-02-03 | 珠海市光辰科技有限公司 | Fiber grating demodulation apparatus based on semiconductor laser |
| CN105424624A (en) * | 2015-11-11 | 2016-03-23 | 广州讯动网络科技有限公司 | Detector based on semiconductor laser unit and parameter adjustment method of detector |
| JP2016184651A (en) * | 2015-03-26 | 2016-10-20 | ソニー株式会社 | Control device, control method and laser beam generation device |
| CN206059896U (en) * | 2016-07-19 | 2017-03-29 | 北京大威激光科技有限公司 | A kind of carbon dioxide radio frequency laser closed loop power control system |
| CN207183795U (en) * | 2017-09-08 | 2018-04-03 | 北京奥博泰科技有限公司 | A kind of laser signal generator |
-
2017
- 2017-09-08 CN CN201710803824.6A patent/CN107359498A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016184651A (en) * | 2015-03-26 | 2016-10-20 | ソニー株式会社 | Control device, control method and laser beam generation device |
| CN105424624A (en) * | 2015-11-11 | 2016-03-23 | 广州讯动网络科技有限公司 | Detector based on semiconductor laser unit and parameter adjustment method of detector |
| CN105300419A (en) * | 2015-12-03 | 2016-02-03 | 珠海市光辰科技有限公司 | Fiber grating demodulation apparatus based on semiconductor laser |
| CN206059896U (en) * | 2016-07-19 | 2017-03-29 | 北京大威激光科技有限公司 | A kind of carbon dioxide radio frequency laser closed loop power control system |
| CN207183795U (en) * | 2017-09-08 | 2018-04-03 | 北京奥博泰科技有限公司 | A kind of laser signal generator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429466A (en) * | 2019-06-24 | 2019-11-08 | 东莞理工学院 | A kind of high-power semiconductor laser real-time detecting system |
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