CN102623880A - Device for locking laser frequency of seed light based on seed injection type laser - Google Patents
Device for locking laser frequency of seed light based on seed injection type laser Download PDFInfo
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- CN102623880A CN102623880A CN2012100712952A CN201210071295A CN102623880A CN 102623880 A CN102623880 A CN 102623880A CN 2012100712952 A CN2012100712952 A CN 2012100712952A CN 201210071295 A CN201210071295 A CN 201210071295A CN 102623880 A CN102623880 A CN 102623880A
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Abstract
The invention discloses a device for locking a laser frequency of seed light based on a seed injection type laser. The device comprises the seed injection type laser, an electrooptic modulator, a tunable F-P etalon, a beam splitting sheet, a photoelectric detector, a data acquisition and analysis unit and an F-P etalon controller, wherein the seed injection laser is used for outputting a continuous seed laser with the wavelength of 1064nm; the data acquisition and analysis unit is used for obtaining a transmissivity measured value of the locking laser on a locking channel of the tunable F-P etalon according to a segmentation proportion of the locking laser and comparing the measured value with a frequency locking reference value and controlling the tunable F-P etalon controller for carrying out regulation if the measured value is different from the frequency locking reference value so that the transmissivity measured value is kept in the frequency locking reference value. According to the device, the signal to noise ratio and the accuracy of luminous intensity measurement in frequency locking can be improved, and the measurement precision of a Rayleigh anemometry laser radar system is improved.
Description
Technical field
The present invention relates to the laser remote sensing technology field, relate in particular to a kind of device that carries out laser frequency lock based on the seed light of seed injection laser.
Background technology
At present; Rayleight windfinding laser radar is a kind of strong instrument of observation atmospheric wind on the middle and senior level; Radar is converted into strength information through frequency discriminator with the frequency information of optical signalling; Relatively the relative frequency displacement of emergent light and atmospheric backscatter light according to doppler principle, is finally inversed by the atmosphere wind speed on the echo-signal direction.Most Rayleight windfinding laser radar selects for use the pouring-in Nd:YAG pulse laser of seed as the radar light source: the less continuous 1064nm laser of frequency stabilization 1064nm laser output; Inject a bigger laser turbulence cavity and an amplifying stage as " seed "; Generate the 1064nm laser pulse identical with the seed laser frequency; Can carry out frequency multiplication or frequency tripling as required then; Produce the laser pulse of 532nm or 355nm, in order to obtain higher echo-signal intensity in the high-altitude, radar can select 532nm or 355nm as operation wavelength usually.
Frequency discriminator is the Primary Component that directly influences radar measurement accuracy; A kind of frequency discriminator commonly used in the world is called tunable formula (Fabry-Perot; F-P) interferometer; Perhaps tunable formula F-P etalon: plating if there is the light of operation wavelength to incide on the F-P etalon, will form repeatedly reflection to the highly reflecting films of operation wavelength between two flat boards on the adjustable parallel flat of two block gaps distance; The transmitance of incident light on etalon is directly directly related with its frequency, thereby can come inverting light frequency information through the transmitance of detection laser.
In a laser radar system; The initial relative position of the frequency of shoot laser and F-P etalon frequency spectrum is determining precision and the accuracy measured, but because the emergent light frequency of laser can receive the influence of factors such as ambient temperature; Small variation also can take place in the frequency spectrum of etalon self in time; Therefore in lidar measurement, keep the relative position of shoot laser frequency and F-P etalon frequency spectrum, the technology of promptly shoot laser being carried out frequency lock just seems crucial.The existing common structure of the employed etalon of Rayleight windfinding laser radar is to tell three zones at the logical light face of etalon: two signalling channels and a locking channel.Plate the film of different-thickness respectively in three zones; Thereby cause trizonal chamber long (being the distance of etalon two parallel plates) to produce difference; This species diversity can be reflected on the spectral characteristic of three passages of etalon, makes the spectrum curve of three passages that a fixing relative position relation arranged on frequency domain.Be illustrated in figure 1 as the sketch map of the spectrum curve of three passages of F-P etalon in the prior art, abscissa is a laser frequency among the figure, and ordinate is the transmitance of laser on etalon; Two frequency spectrums (1) and (2) of both sides are the signalling channel frequency spectrum, and middle (3) are the locking channel frequency spectrum, and wherein: the intersection point of two signalling channel frequency spectrums is identical with half high position abscissa of locking channel frequency spectrum.
In the frequency locking scheme of prior art, the locking that is used for frequency locking is exactly 532nm or the 355nm pulse laser that emission gets into atmosphere with laser, and when measuring the pulsed light light intensity, it is low to measure signal to noise ratio; And owing to the rising and the fall time of pulse are very fast; Common detector response time does not catch up with, and can cause the measurement distortion of paired pulses waveform, poor accuracy; Transmitance precision and accuracy that these shortcomings will cause measuring are low, further cause the radar system certainty of measurement low.
Summary of the invention
The purpose of this invention is to provide and a kind ofly carry out the device of laser frequency lock, can promote the signal to noise ratio and the accuracy of luminous intensity measurement in the frequency lock, and then improve the certainty of measurement of Rayleight windfinding laser radar system based on the seed light of seed injection laser.
The objective of the invention is to realize through following technical scheme:
A kind ofly carry out the device of laser frequency lock based on the seed light of seed injection laser, said device comprises seed injection laser, electrooptic modulator; Tunable formula F-P etalon, beam splitting chip, photodetector; The data collection and analysis unit, F-P etalon controller, wherein:
Said seed injection laser is used to export the continuous seed laser of 1064nm;
Said tunable formula F-P etalon is to the locking channel parameter of the 1064nm wavelength design standard tool of seed laser; And to two signalling channel parameters of the operation wavelength design standard tool of 532nm or 355nm, and the frequency spectrum relative position of three passages meets design requirement: half high position of locking channel frequency spectrum is identical with the abscissa of two signalling channel frequency spectrum position of intersecting point;
Said electrooptic modulator; Be used for before the frequency lock operation; Laser frequency to said seed injection laser output is modulated; Make the frequency spectrum relative position of three passages of said tunable formula F-P etalon satisfy above-mentioned designing requirement, and the transmitance value of seed laser on said locking channel is the frequency locking fiducial value when satisfying above-mentioned designing requirement;
When frequency lock is operated; The continuous seed laser of said 1064nm is told a part and is used laser as locking; This locks with laser through behind the said electrooptic modulator; Be divided into two parts through said beam splitting chip according to certain ratio, a part directly gets into a photodetector, measures its light intensity; Another part changes into the form of directional light with lens, goes into to inject the locking channel of said tunable formula F-P etalon, after this tunable formula F-P etalon, measures its light intensity with another photodetector again;
Said data collection and analysis unit; Be used for according to the ration of division of this locking with laser; And the measured value of two photodetectors that collect, obtain this locking with the transmitance measured value of laser on said tunable formula F-P etalon locking channel, this measured value and said frequency locking fiducial value are compared; If difference is arranged, then control said F-P etalon controller and regulate;
Said F-P etalon controller is used for regulating said tunable formula F-P etalon according to instruction, makes said transmitance measured value remain on said frequency locking fiducial value.
Said device also comprises:
The spectrogram drawing unit; Be used for before the frequency lock operation; Transmittance curve to three passages of said tunable formula F-P etalon scans, and calculates the transmitance of seed laser on these three passages under different cavity is long, and draws out the spectrogram of said tunable formula F-P etalon in view of the above.
The chamber length of said tunable formula F-P etalon is controlled to carry out meticulous adjusting through piezoelectric ceramic.
Said F-P etalon controller is further regulated the piezoelectric ceramic in the said tunable formula F-P etalon according to instruction; The chamber of regulating said tunable formula F-P etalon is long; Make the frequency spectrum overall offset of three passages on the said tunable formula F-P etalon, so that said transmitance measured value remains on said frequency locking fiducial value.
Technical scheme by the invention described above provides can find out that said device comprises seed injection laser, electrooptic modulator; Tunable formula F-P etalon, beam splitting chip, photodetector; The data collection and analysis unit; F-P etalon controller, wherein: said seed injection laser is used to export the continuous seed laser of 1064nm; Said tunable formula F-P etalon is to the locking channel parameter of the 1064nm wavelength design standard tool of seed laser; And to two signalling channel parameters of the operation wavelength design standard tool of 532nm or 355nm, and the frequency spectrum relative position of three passages meets design requirement: half high position of locking channel frequency spectrum is identical with the abscissa of two signalling channel frequency spectrum position of intersecting point; Said electrooptic modulator; Be used for before the frequency lock operation; Laser frequency to said seed injection laser output is modulated; Make the frequency spectrum relative position of three passages of said tunable formula F-P etalon satisfy above-mentioned designing requirement, and the transmitance value of seed laser on said locking channel is the frequency locking fiducial value when satisfying above-mentioned designing requirement; When frequency lock is operated; The continuous seed laser of said 1064nm is told a part and is used laser as locking; This locks with laser through behind the said electrooptic modulator; Be divided into two parts through said beam splitting chip according to certain ratio, a part directly gets into a photodetector, measures its light intensity; Another part changes into the form of directional light with lens, goes into to inject the locking channel of said tunable formula F-P etalon, after this tunable formula F-P etalon, measures its light intensity with another photodetector again; Said data collection and analysis unit; Be used for according to the ration of division of this locking with laser; And the measured value of two photodetectors that collect, obtain this locking with the transmitance measured value of laser on said tunable formula F-P etalon locking channel, this measured value and said frequency locking fiducial value are compared; If difference is arranged, then control said F-P etalon controller and regulate; Said F-P etalon controller is used for regulating said tunable formula F-P etalon according to instruction, makes said transmitance measured value remain on said frequency locking fiducial value.Just can promote the signal to noise ratio and the accuracy of luminous intensity measurement in the frequency lock through said apparatus, and then improve the certainty of measurement of Rayleight windfinding laser radar system.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art; Under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the sketch map of the spectrum curve of three passages of F-P etalon in the prior art;
Fig. 2 is the apparatus structure sketch map of the laser frequency lock that the embodiment of the invention provided;
Fig. 3 is the spectrum diagram of the said tunable formula F-P etalon of the embodiment of the invention;
Fig. 4 is the apparatus structure sketch map of instantiation provided by the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
To combine accompanying drawing that the embodiment of the invention is done to describe in detail further below, and be illustrated in figure 2 as the structural representation of the laser frequency lock device that the embodiment of the invention provides, device comprises described in Fig. 2: seed injection laser 1; Electrooptic modulator 2, tunable formula F-P etalon 3, beam splitting chip 4; Photodetector 5 and 6; Data collection and analysis unit 7, F-P etalon controller 8, wherein:
Seed pouring-in (Nd:YAG) laser 1 is used to export the continuous seed laser of 1064nm;
Tunable formula F-P etalon 3 is to the locking channel parameter of the 1064nm wavelength design standard tool of seed laser; And to two signalling channel parameters of the operation wavelength design standard tool of 532nm or 355nm, and the frequency spectrum relative position of three passages meets design requirement: half high position of locking channel frequency spectrum is identical with the abscissa of two signalling channel frequency spectrum position of intersecting point.In addition; In concrete implementation procedure: the centre frequency of above-mentioned seed laser (1064nm) satisfies strict 2 times or 3 times of relations with the centre frequency of work laser (532nm or 355nm pulse laser); The coating film thickness that designs locking channel, signalling channel on this basis is poor, and concrete method for designing is identical with art methods.
When frequency lock is operated; The continuous seed laser of above-mentioned 1064nm is told a part and is used laser as locking; This locks with laser through behind the said electrooptic modulator 2; Be divided into two parts through said beam splitting chip 4 according to certain ratio, a part directly gets into a photodetector 5, measures its light intensity; Another part changes into the form of directional light with lens, goes into to inject the locking channel of said tunable formula F-P etalon 3, after this tunable formula F-P etalon 3, measures its light intensity with another photodetector 6 again.
Data collection and analysis unit 7; Be used for according to the ration of division of this locking with laser; And the measured value of two photodetectors that collect, obtain this locking with the transmitance measured value of laser on said tunable formula F-P etalon 3 locking channels, this measured value and said frequency locking fiducial value are compared; If difference is arranged, then control said F-P etalon controller 8 and regulate.
In concrete implementation procedure; The chamber length of above-mentioned tunable formula F-P etalon 3 can be through piezoelectric ceramic control to carry out meticulous adjusting; And F-P etalon controller 8 further can be regulated the piezoelectric ceramic in the said tunable formula F-P etalon 3 according to instruction; Thereby the chamber of regulating said tunable formula F-P etalon 3 is long, makes the frequency spectrum overall offset of three passages on the said tunable formula F-P etalon 3, so that said transmitance measured value remains on said frequency locking fiducial value.
In addition, said apparatus can also comprise:
The spectrogram drawing unit; Be used for before frequency lock operation, the transmittance curve of three passages of said tunable formula F-P etalon is scanned, calculate the transmitance of seed laser on these three passages under different cavity is long; And draw out the spectrogram of said tunable formula F-P etalon in view of the above; Be illustrated in figure 3 as the spectrum diagram of the said tunable formula F-P etalon of the embodiment of the invention, the laser frequency among Fig. 3 (11) is the laser frequency of seed laser, i.e. 1064nm.
Come device of the present invention is described with concrete instance below, be illustrated in figure 4 as the apparatus structure sketch map of instantiation provided by the present invention, among Fig. 4:
The frequency modulation(FM) scope of electrooptic modulator (6) is 0-2GHz.
The long 12.5cm in whole chamber of tunable formula F-P etalon (7); One of 2 signalling channel is the highly reflecting films of plated film, plating 70 nanometer thickness not; Locking channel plates the highly reflecting films of 28 nanometer thickness, and the chamber length of this etalon can and be done the long adjusting in meticulous chamber through piezoelectric ceramic control.
Before the frequency locking operation; At first three passages to tunable formula F-P etalon (7) carry out transmitance scanning; If find locking channel frequency spectrum and signalling channel frequency spectrum relative position and Design Theory deviation is arranged; Then regulate electrooptic modulator (6); The frequency displacement in addition certain to the fundamental frequency light of outgoing so that half high position of the frequency spectrum of the locking channel of tunable formula F-P etalon (7) is identical with the frequency spectrum position of intersecting point frequency coordinate of two signalling channels, and draws the transmitance of laser this moment on locking channel as the frequency locking fiducial value.
When frequency locking is operated; Use 1 * 2 optical fiber (13) all to tell a part and use laser as locking by the seed laser of seed laser (5) injection main laser (12); This locks with behind the laser process electrooptic modulator (6), and scioptics (14) collimate, and change it into directional light.
Then, this bundle directional light is told the photodetector (17) that is coupled into an operating wavelength range covering 1064nm after a certain proportion of light passes through condenser lens (16) at entering tunable formula F-P etalon (7) preceding use beam splitting chips (15) and is measured light intensity by photodetector (17); Behind the locking channel (as indicated with a dotted line in Fig. 4) of another part through tunable formula F-P etalon (7), be coupled into an identical photodetector (19) through condenser lens (18) again and measure light intensity.
The data collection and analysis system is subdivided into data acquisition system (8)-1 and Computerized analysis system (8)-2, and is as shown in Figure 4: data acquisition system (8)-1 is collected the measurement data of two photodetectors (17 and 19), passes in the Computerized analysis system (8)-2; Computerized analysis system (8)-2 is compared according to the measured value of two detectors; And the beam splitting ratio of beam splitting chip (15); Calculate the transmitance measured value of current seed laser on tunable formula F-P etalon (7) locking channel; This measured value and frequency locking fiducial value are compared, draw cavity length direction and size that tunable formula F-P etalon (7) needs adjusting.
The result that Computerized analysis system (8)-2 will calculate again gives etalon controller (9); By the piezoelectric ceramic in etalon controller (9) the tunable formula F-P etalon of control (7); Make dull and stereotyped moving; Three passage frequency spectrum overall offset on the tunable formula F-P etalon (7) so that the transmitance value of seed laser on locking channel comes back to the frequency locking fiducial value, realize frequency lock.
Just can promote the signal to noise ratio and the accuracy of luminous intensity measurement in the frequency lock through the described device of the foregoing description; And then the certainty of measurement of raising Rayleight windfinding laser radar system; Specifically: the present invention adopts the 1064nm continuous light to carry out frequency lock, and in same Measuring Time, the scheme that has signal time to use pulsed light to carry out frequency lock than prior art has very big raising; Have signal time to be equivalent to carry out repeatedly measure and increase, this measure meeting improves signal to noise ratio greatly.
SNR in the formula (1)
NetIt is the clean signal to noise ratio of repeatedly measuring; N is the number of times of independent measurement; SNR is the signal to noise ratio of single measurement.
When measuring light intensity, it is exactly Measuring Time that signal time is arranged, and when using pulsed light to carry out frequency lock; The pulsed light pulsewidth is a nanosecond order; Pulse repetition frequency has only tens hertz, and with 20 nanoseconds of pulsewidth, pulse repetition frequency is an example for 50 hertz; Then continuous measurement is compared the impulsive measurement signal to noise ratio and has been promoted 1000 times, has promoted the signal to noise ratio of luminous intensity measurement in the frequency lock.
Simultaneously, because the present invention carries out luminous intensity measurement to continuous light, light signal strength does not have big saltus step at short notice, and detector response time causes the situation of measured waveform distortion can not take place inadequately soon.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (4)
1. one kind is carried out the device of laser frequency lock based on the seed light of seed injection laser, it is characterized in that said device comprises the seed injection laser; Electrooptic modulator, tunable formula F-P etalon, beam splitting chip; Photodetector; The data collection and analysis unit, F-P etalon controller, wherein:
Said seed injection laser is used to export the continuous seed laser of 1064nm;
Said tunable formula F-P etalon is to the locking channel parameter of the 1064nm wavelength design standard tool of seed laser; And to two signalling channel parameters of the operation wavelength design standard tool of 532nm or 355nm, and the frequency spectrum relative position of three passages meets design requirement: half high position of locking channel frequency spectrum is identical with the abscissa of two signalling channel frequency spectrum position of intersecting point;
Said electrooptic modulator; Be used for before the frequency lock operation; Laser frequency to said seed injection laser output is modulated; Make the frequency spectrum relative position of three passages of said tunable formula F-P etalon satisfy above-mentioned designing requirement, and the transmitance value of seed laser on said locking channel is the frequency locking fiducial value when satisfying above-mentioned designing requirement;
When frequency lock is operated; The continuous seed laser of said 1064nm is told a part and is used laser as locking; This locks with laser through behind the said electrooptic modulator; Be divided into two parts through said beam splitting chip according to certain ratio, a part directly gets into a photodetector, measures its light intensity; Another part changes into the form of directional light with lens, goes into to inject the locking channel of said tunable formula F-P etalon, after this tunable formula F-P etalon, measures its light intensity with another photodetector again;
Said data collection and analysis unit; Be used for according to the ration of division of this locking with laser; And the measured value of two photodetectors that collect, obtain this locking with the transmitance measured value of laser on said tunable formula F-P etalon locking channel, this measured value and said frequency locking fiducial value are compared; If difference is arranged, then control said F-P etalon controller and regulate;
Said F-P etalon controller is used for regulating said tunable formula F-P etalon according to instruction, makes said transmitance measured value remain on said frequency locking fiducial value.
2. as claimed in claim 1ly carry out the device of laser frequency lock, it is characterized in that said device also comprises based on the seed light of seed injection laser:
The spectrogram drawing unit; Be used for before the frequency lock operation; Transmittance curve to three passages of said tunable formula F-P etalon scans, and calculates the transmitance of seed laser on these three passages under different cavity is long, and draws out the spectrogram of said tunable formula F-P etalon in view of the above.
3. as claimed in claim 1ly carry out the device of laser frequency lock, it is characterized in that based on the seed light of seed injection laser,
The chamber length of said tunable formula F-P etalon is controlled to carry out meticulous adjusting through piezoelectric ceramic.
4. describedly carry out the device of laser frequency lock like claim 1 or 3, it is characterized in that based on the seed light of seed injection laser,
Said F-P etalon controller is further regulated the piezoelectric ceramic in the said tunable formula F-P etalon according to instruction; The chamber of regulating said tunable formula F-P etalon is long; Make the frequency spectrum overall offset of three passages on the said tunable formula F-P etalon, so that said transmitance measured value remains on said frequency locking fiducial value.
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| CN201210071295.2A CN102623880B (en) | 2012-03-16 | 2012-03-16 | Device for locking laser frequency of seed light based on seed injection type laser |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499814A (en) * | 2013-09-30 | 2014-01-08 | 中国科学技术大学 | High-precision Doppler laser radar frequency locking system |
| CN105068087A (en) * | 2015-09-17 | 2015-11-18 | 中国科学技术大学 | Molecular scattering Doppler lidar for coherent optical paths |
| CN105092032A (en) * | 2015-06-30 | 2015-11-25 | 北京师范大学 | Transient high resolution spectrometer based on F-P etalon |
| CN105467400A (en) * | 2016-01-06 | 2016-04-06 | 中国科学技术大学 | Automatic detecting and screening circuit for determining seed laser successful injection |
| CN107706707A (en) * | 2017-10-27 | 2018-02-16 | 北方工业大学 | Low noise acousto-optic multifrequency tunable oscillator |
| CN109738162A (en) * | 2019-01-08 | 2019-05-10 | 中国科学院合肥物质科学研究院 | A kind of apparatus and method using angle tuning measurement F-P etalon parameter |
| CN112038879A (en) * | 2020-08-04 | 2020-12-04 | 烽火通信科技股份有限公司 | Cross-locked wavelength-adjustable high-speed laser and method |
| WO2021036167A1 (en) * | 2019-08-28 | 2021-03-04 | 中国科学院合肥物质科学研究院 | Apparatus for measuring fp transmittance curve using whispering gallery mode laser light source, and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6122087A (en) * | 1997-02-24 | 2000-09-19 | Ando Electric Co., Ltd. | Optical-frequency-stabilized light source |
| CN1663086A (en) * | 2002-04-25 | 2005-08-31 | 布克哈姆技术公共有限公司 | Frequency locker |
| CN102226842A (en) * | 2011-03-25 | 2011-10-26 | 中国科学技术大学 | Optical receiving system of doppler wind lidar |
-
2012
- 2012-03-16 CN CN201210071295.2A patent/CN102623880B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6122087A (en) * | 1997-02-24 | 2000-09-19 | Ando Electric Co., Ltd. | Optical-frequency-stabilized light source |
| CN1663086A (en) * | 2002-04-25 | 2005-08-31 | 布克哈姆技术公共有限公司 | Frequency locker |
| CN102226842A (en) * | 2011-03-25 | 2011-10-26 | 中国科学技术大学 | Optical receiving system of doppler wind lidar |
Non-Patent Citations (2)
| Title |
|---|
| LEI TANG ET AL.: "Mobile Rayleigh Doppler wind lidar based on double-edge technique", 《CHINESE OPTICS LETTERS》 * |
| 舒志峰 等: "三通道Fabry-Perot 标准具在瑞利测风激光雷达中的应用", 《红外与激光工程》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499814A (en) * | 2013-09-30 | 2014-01-08 | 中国科学技术大学 | High-precision Doppler laser radar frequency locking system |
| CN103499814B (en) * | 2013-09-30 | 2016-01-20 | 中国科学技术大学 | A kind of high precision Doppler lidar Frequency Locking system |
| CN105092032A (en) * | 2015-06-30 | 2015-11-25 | 北京师范大学 | Transient high resolution spectrometer based on F-P etalon |
| CN105068087A (en) * | 2015-09-17 | 2015-11-18 | 中国科学技术大学 | Molecular scattering Doppler lidar for coherent optical paths |
| CN105467400A (en) * | 2016-01-06 | 2016-04-06 | 中国科学技术大学 | Automatic detecting and screening circuit for determining seed laser successful injection |
| CN105467400B (en) * | 2016-01-06 | 2018-05-01 | 中国科学技术大学 | The automatic detection and screening circuit that a kind of definite seed laser successfully injects |
| CN107706707A (en) * | 2017-10-27 | 2018-02-16 | 北方工业大学 | Low noise acousto-optic multifrequency tunable oscillator |
| CN109738162A (en) * | 2019-01-08 | 2019-05-10 | 中国科学院合肥物质科学研究院 | A kind of apparatus and method using angle tuning measurement F-P etalon parameter |
| WO2021036167A1 (en) * | 2019-08-28 | 2021-03-04 | 中国科学院合肥物质科学研究院 | Apparatus for measuring fp transmittance curve using whispering gallery mode laser light source, and method |
| US11313760B2 (en) | 2019-08-28 | 2022-04-26 | Hefei Institute of Physical Science, Chinese Academy of Sciences | Device and method for measuring transmittance curve of Fabry-Parot using whispering gallery mode laser source |
| CN112038879A (en) * | 2020-08-04 | 2020-12-04 | 烽火通信科技股份有限公司 | Cross-locked wavelength-adjustable high-speed laser and method |
| CN112038879B (en) * | 2020-08-04 | 2022-04-19 | 烽火通信科技股份有限公司 | Cross-locked wavelength-adjustable high-speed laser and method |
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