CN103869462A - Device for carrying out splicing mirror common-phase control by utilizing cavity ring-down technology - Google Patents
Device for carrying out splicing mirror common-phase control by utilizing cavity ring-down technology Download PDFInfo
- Publication number
- CN103869462A CN103869462A CN201410123961.1A CN201410123961A CN103869462A CN 103869462 A CN103869462 A CN 103869462A CN 201410123961 A CN201410123961 A CN 201410123961A CN 103869462 A CN103869462 A CN 103869462A
- Authority
- CN
- China
- Prior art keywords
- mirror
- optical resonator
- optical
- splicing
- resonator chamber
- Prior art date
- 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.)
- Granted
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims abstract description 89
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009610 hypersensitivity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 plasma Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Images
Landscapes
- Lasers (AREA)
Abstract
The invention discloses a device for controlling the common phase of a splicing mirror by using a cavity ring-down technology. The laser comprises a laser, a mode matching optical device, at least one reflector, a converging lens, a photoelectric detector, a function generator, a collecting card and a computer. This device will turn into the detection to the detection of splicing mirror phase place to the optical resonator who has the splicing mirror to constitute and ring down the detection of time, improves optical resonator's ring down time through adjusting the slope of splicing sub mirror and translating, realizes the common phase place control to the splicing mirror.
Description
Technical field
The invention belongs to optical field, relate to a kind of optical cavity ring-down technology of utilizing and realize the splicing mirror device of phase control altogether.
Background technology
Optical cavity ring-down technology (Cavity Ring-Down, CRD) be a kind of hypersensitivity Detection Techniques, this technology is not directly measured light intensity, but the ring-down time of measuring beam in optical resonator, the wave noise of light source output power does not affect measurement result, is the simple absolute measurement technology of a kind of device.Optical cavity ring-down technology has unrivaled advantage and application widely with respect to traditional measurement method, is suggested the rear sight that attracts world many countries researcher since the eighties in last century, and application scope is also constantly expanding.Optical cavity ring-down technology has realized the spectral measurement to comprising the materials such as gas, liquid, solid, plasma, atmosphere suspended particle.Optical cavity ring-down technology is also at Trace gas detection, and in flame, the aspect such as material composition, solid film absorption, bending loss of optical fiber, plasma number of free radical, high reflection rate measurement has a wide range of applications.
In wavelength one timing, telescopical resolution increases and improves with the bore of primary mirror.But bigbore single primary mirror has proposed unprecedented challenge to aspects such as minute surface preparation, processing detections.The method of splicing mirror can realize the telescopical optical property of heavy caliber, can reduce again processing cost and the cycle of mirror, for large telescope has been opened up a new path.But, only have the image quality that can reach identical Aperture Telescope in the time of the splicing strict common phase of sub-mirror position.Late 1990s, people proposed the multiple method of phase-detection altogether so far, for example, between the sub-mirror of splicing, adopt edge dislocation sensor, detect the method such as telescope far-field spot, optical component surface shape detection interferometer.
To the optical resonator being made up of splicing mirror and catoptron, from optical cavity ring-down angle, the inclination of splicing sub-mirror is relevant with the optical cavity ring-down time with translation degree.In the time of the splicing strict common phase of sub-mirror position, the ring-down time maximum of optical resonator; When splicing sub-mirror and not meeting common phase position, can in resonator cavity, introduce diffraction loss, reduce the ring-down time of resonator cavity.
Summary of the invention
Based in the time splicing the strict common phase of sub-mirror position, the ring-down time maximum of optical resonator; When splicing sub-mirror and not meeting common phase position, can in resonator cavity, introduce diffraction loss, reduce the phenomenon of the ring-down time of resonator cavity, the present invention proposes and a kind ofly novel utilize optical cavity ring-down technology to the splicing mirror device of phase control altogether.
Utilize optical cavity ring-down technology to splice a mirror device for phase control altogether, comprise laser instrument, pattern match optical device, splicing mirror, optical resonator chamber mirror, condenser lens, photodetector, function generator, data collecting card and computing machine, is characterized in that:
Described optical resonator chamber mirror at least comprises one first optical resonator chamber mirror; Also can comprise one second optical resonator chamber mirror.Splicing mirror and optical resonator chamber mirror composition stable optical resonator cavity;
The light beam that laser instrument sends, through the modulation of pattern match optical device, incides in optical resonator;
Condenser lens, is positioned at after the first optical resonator chamber mirror, and the light beam that sees through optical resonator chamber mirror is focused on photodetector;
Photodetector, is connected with data collecting card, and light signal is converted into electric signal;
Data collecting card, is connected with computing machine, for gathering the electric signal of photodetector output, and data is sent to computing machine;
Computing machine, control function generator produces waveform, receives the electric signal of capture card input, is connected with splicing mirror;
Function generator, one end is connected with computing machine, and one end is connected with laser instrument in addition;
While carrying out common phase control, computing machine applies disturbance to the sub-mirror of splicing, detects the variation of resonator cavity ring-down time, if ring-down time increases, applies forward disturbance next time, otherwise applies reverse disturbance.
By the distance of element or the focal length of lens in Move Mode matching optics device, making the laser that laser instrument sends is an eigenmodes of optical resonator.Have two kinds of methods can realize the pattern match of optical resonator, the first method, measures Laser Output Beam q parameter, according to Matrix optics method, calculates while meeting pattern match condition the parameter of pattern match optical system; Second method is that the state of fixed optics resonator cavity is constant, the longest as target taking optical resonator ring-down time, regulates the parameter of matching optics system, in the time that the optical cavity ring-down time is the longest, and the Mode Coupling minimum in optical resonator, optical cavity ring-down time maximum.
The optical resonator of splicing mirror and at least one optical resonator chamber mirror composition is stable cavity; Optical resonator at least comprises a catoptron, and when only with a catoptron, catoptron is coaxial parallel with splicing mirror, forms straight chamber; While using polylith catoptron, catoptron and splicing mirror composition folded cavity.
Laser Output Beam is Gaussian beam, can be Ermy-Gaussian beam, can be also Laguerre-Gaussian beam, and the output beam of special pattern can reduce the loss in splicing sub-mirror gap.
Before plus lens is positioned at photodetector, plays light beam is converged to the effect in photodetector photosensitive region.Computing machine needs calculating optical resonator cavity ring-down time, and the definition ring-down time τ that swings chamber that declines is that output intensity I (t) decays to initial transmission light intensity I
11/e time required time.
Splice the inclination of sub-mirror, the loss that translation can change optical resonator, but splice the inclination of sub-mirror and the loss of translation and resonator cavity is related to complexity, while carrying out common phase control, computing machine applies disturbance to the sub-mirror of splicing, detect the variation of resonator cavity ring-down time, if ring-down time increases, apply forward disturbance next time, otherwise apply reverse disturbance.
Principle of the present invention is as follows:
For the optical resonator being formed by splicing mirror, the common phase bit error that splices sub-mirror can be introduced diffraction loss in resonator cavity, cause optical resonator ring-down time to reduce, only have in the time splicing sub-mirror at strict satisfied phase condition altogether, the ring-down time of optical resonator is the longest.Therefore in order to realize the common phase control to splicing mirror, first the present invention will splice mirror and at least one catoptron composition optical resonator, the longest as target taking optical resonator ring-down time, by the mode of random optimizing, regulate inclination, the translation of the sub-mirror of splicing, realize the common phase control to splicing mirror.
Brief description of the drawings
Fig. 1 is a kind of embodiment light path schematic diagram of apparatus of the present invention;
Fig. 2 splices the simulation result that is related between the size of translation error between mirror and ring-down time;
The common phase control simulation result of Fig. 3 based on random paralleling gradient descent algorithm.
Embodiment
Describe the present invention in detail below in conjunction with embodiment and accompanying drawing, but the present invention is not limited to this.
As shown in Figure 1, one utilizes optical cavity ring-down technology to splicing mirror common phase level control device, comprise laser instrument (1), pattern match optical device (2), splicing mirror (3), optical resonator mirror ((4-1) and (4-2)), condenser lens (5), photodetector (6), function generator (7), data collecting card (8), computing machine (9).
The method that employing device as shown in Figure 1 splices the common phase control of mirror is as follows:
1) splicing mirror (3) is made up of two sub-mirrors of splicing, and in order to reduce to splice the loss that between sub-mirror, introduce in gap, the pattern of laser instrument (1) output is TEM
10mould light beam;
2) referring to Fig. 1, optical resonator comprises one first optical resonator chamber mirror (4-1), and the first optical resonator chamber mirror (4-1) is level crossing; Also comprise one second optical resonator chamber mirror (4-2), its radius of curvature R=6 meter; Splicing mirror (3) is level crossing, the first optical resonator chamber mirror (4-1), the second optical resonator chamber mirror (4-2) and splicing mirror (3) composition hemicon-focal resonator, the i.e. long L=R/2 in chamber;
3) by the distance of element in Move Mode matching optics device (2), the beam waist that makes to be injected in optical resonator is positioned on the sub-mirror minute surface of splicing, the emulation of this embodiment between the sub-mirror of splicing translation error size on resonator cavity ring-down time impact, as shown in Figure 2;
4) computing machine (9) is modulated the output power of laser instrument (1) by function generator (7), produce square-wave output signal, at the negative edge of laser power, gather by capture card (8) the laser intensity signal that photodetector (6) measures, computing machine (9) is asked optical resonator ring-down time by the mode of curve, and definition ring-down time τ is that output intensity I (t) decays to initial transmission light intensity I
11/e time required time;
5) in the present embodiment, adopt random paralleling gradient descent algorithm as random control method for improving.Control target using ring-down time τ maximum as random paralleling gradient descent algorithm, utilize random paralleling gradient descent algorithm calculate in real time splicing sub-mirror translation error, the present embodiment emulation to splicing the control effect of sub-mirror translation error, as shown in Figure 3.
Claims (5)
1. one kind is utilized optical cavity ring-down technology to splice the mirror device of phase control altogether, comprise laser instrument (1), pattern match optical device (2), splicing mirror (3), optical resonator chamber mirror (4), condenser lens (5), photodetector (6), function generator (7), data collecting card (8) and computing machine (9), is characterized in that:
Splicing mirror (3) and optical resonator chamber mirror (4) composition stable optical resonator cavity; Optical resonator chamber mirror comprises at least one the first optical resonator chamber mirror (4-1);
The light beam that laser instrument (1) sends, through pattern match optical device (2) modulation, incides in optical resonator;
Condenser lens (5), is positioned at after the first optical resonator chamber mirror (4-1), will focus on photodetector (6) through the light beam of the first optical resonator chamber mirror (4-1);
Photodetector (6), is connected with data collecting card (8), and light signal is converted into electric signal;
Data collecting card (8), is connected with computing machine (9), for gathering the electric signal of photodetector (6) output, and data is sent to computing machine (9);
Computing machine (9), control function generator (7) produces waveform, receives the electric signal of capture card (8) input, is connected with splicing mirror (3);
Function generator (7), one end is connected with computing machine (9), and one end is connected with laser instrument (1) in addition;
While carrying out common phase control, computing machine (9) applies disturbance to the sub-mirror of splicing, detects the variation of resonator cavity ring-down time, if ring-down time increases, applies forward disturbance next time, otherwise applies reverse disturbance.
2. utilize as claimed in claim 1 optical cavity ring-down technology to splice the mirror device of phase control altogether, it is characterized in that, described pattern match optical device (2) is for being the combination of positive lens, negative lens or positive lens and negative lens, and in pattern match optical device (2), at least one element can change focal length or move along laser beam transmission direction.
3. utilize as claimed in claim 1 optical cavity ring-down technology to splice the mirror device of phase control altogether, it is characterized in that, described splicing mirror (3), by being at least made up of two sub-mirrors of splicing, splices sub-mirror with the device that can regulate inclination or translation.
4. utilize as claimed in claim 1 optical cavity ring-down technology to splice the mirror device of phase control altogether, it is characterized in that, described optical resonator comprises splicing mirror (3) and at least one optical resonator chamber mirror (4);
Described optical resonator is stable cavity:
During only with an optical resonator chamber mirror, described optical resonator chamber mirror is one first optical resonator chamber mirror (4-1), and described the first optical resonator chamber mirror (4-1), with to splice mirror (3) coaxial parallel, forms straight chamber;
While using polylith optical resonator chamber mirror, described optical resonator chamber mirror comprises one first optical resonator chamber mirror (4-1), and the second optical resonator chamber mirror (4-2), described the first optical resonator chamber mirror (4-1), the second optical resonator chamber mirror (4-2) and splicing mirror (3) composition folded cavity.
5. utilize as claimed in claim 1 optical cavity ring-down technology to splice the mirror device of phase control altogether, it is characterized in that, the waveform that described function generator (7) produces is rectangular wave, and it is 5 microseconds that the high level of rectangular wave and low level continue minimum time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123961.1A CN103869462B (en) | 2014-03-28 | 2014-03-28 | Device for carrying out splicing mirror common-phase control by utilizing cavity ring-down technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123961.1A CN103869462B (en) | 2014-03-28 | 2014-03-28 | Device for carrying out splicing mirror common-phase control by utilizing cavity ring-down technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103869462A true CN103869462A (en) | 2014-06-18 |
| CN103869462B CN103869462B (en) | 2016-01-20 |
Family
ID=50908179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410123961.1A Active CN103869462B (en) | 2014-03-28 | 2014-03-28 | Device for carrying out splicing mirror common-phase control by utilizing cavity ring-down technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103869462B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966280A (en) * | 2017-11-21 | 2018-04-27 | 华东交通大学 | A kind of photodetector system applied to spliced telescope and its quick common phase adjusting method |
| CN108827596A (en) * | 2018-04-03 | 2018-11-16 | 华东交通大学 | One kind being applied to the novel common phase detection method of sectional type spliced telescope and device |
| CN108845415A (en) * | 2018-04-03 | 2018-11-20 | 华东交通大学 | A kind of method and detection system that the thick common phase applied to splicing mirror is adjusted |
| CN111141707A (en) * | 2019-12-25 | 2020-05-12 | 电子科技大学 | High-resolution imaging measurement method for reflectivity distribution of high-reflection optical element |
| CN113310902A (en) * | 2021-05-26 | 2021-08-27 | 中国科学院光电技术研究所 | Optical cavity ring-down adaptive optical active transverse mode matching method |
| CN114720402A (en) * | 2022-03-31 | 2022-07-08 | 中国科学院光电技术研究所 | Calibration device for composite sensing passive cavity |
| CN116385547A (en) * | 2023-06-02 | 2023-07-04 | 中国科学院云南天文台 | Astronomical telescope main mirror surface co-phase detection method, system and computer equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5903358A (en) * | 1997-06-20 | 1999-05-11 | The Board Of Trustees Of The Leland Stanford Junior University | Spectroscopy using active diode laser stabilization by optical feedback |
| US20070195434A1 (en) * | 2006-02-23 | 2007-08-23 | Picarro, Inc. | Optical system including a weak lens and a beam translation plate for selectively coupling to the lowest order mode of an optical resonator |
| CN101261181A (en) * | 2008-01-04 | 2008-09-10 | 中国科学院光电技术研究所 | Device for measuring high reflectivity |
| CN102721529A (en) * | 2012-05-27 | 2012-10-10 | 中国科学院光电技术研究所 | Multi-wavelength integration method for scanning and measuring high reflectivity of large-caliber reflective optical element |
-
2014
- 2014-03-28 CN CN201410123961.1A patent/CN103869462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5903358A (en) * | 1997-06-20 | 1999-05-11 | The Board Of Trustees Of The Leland Stanford Junior University | Spectroscopy using active diode laser stabilization by optical feedback |
| US20070195434A1 (en) * | 2006-02-23 | 2007-08-23 | Picarro, Inc. | Optical system including a weak lens and a beam translation plate for selectively coupling to the lowest order mode of an optical resonator |
| CN101261181A (en) * | 2008-01-04 | 2008-09-10 | 中国科学院光电技术研究所 | Device for measuring high reflectivity |
| CN102721529A (en) * | 2012-05-27 | 2012-10-10 | 中国科学院光电技术研究所 | Multi-wavelength integration method for scanning and measuring high reflectivity of large-caliber reflective optical element |
Non-Patent Citations (4)
| Title |
|---|
| A.P.YALIN ET AL: ""Temporally resolved cavity ring-down sepctroscopy in a pulsed nitrogen plasma"", 《APPLIED PHYSICS LETTERS》 * |
| CLIVE H. ROWE ET AL: ""Design an operation of a very large ring laser gyroscope"", 《APPLIED OPTICS》 * |
| 宋贺伦等: ""低相干光源干涉系统在大口径拼接子镜间相位误差检测上的应用"", 《光学学报》 * |
| 宋贺伦等: ""基于宽光谱干涉系统的拼接主镜共相位检测技术"", 《强激光与粒子束》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966280A (en) * | 2017-11-21 | 2018-04-27 | 华东交通大学 | A kind of photodetector system applied to spliced telescope and its quick common phase adjusting method |
| CN107966280B (en) * | 2017-11-21 | 2021-07-06 | 华东交通大学 | Photoelectric detection system applied to spliced telescope and rapid common-phase adjustment method thereof |
| CN108827596A (en) * | 2018-04-03 | 2018-11-16 | 华东交通大学 | One kind being applied to the novel common phase detection method of sectional type spliced telescope and device |
| CN108845415A (en) * | 2018-04-03 | 2018-11-20 | 华东交通大学 | A kind of method and detection system that the thick common phase applied to splicing mirror is adjusted |
| CN108845415B (en) * | 2018-04-03 | 2021-02-26 | 华东交通大学 | Coarse common-phase adjustment method and detection system applied to splicing mirror |
| CN108827596B (en) * | 2018-04-03 | 2021-06-29 | 华东交通大学 | Common-phase detection method and device applied to segmented splicing telescope |
| CN111141707A (en) * | 2019-12-25 | 2020-05-12 | 电子科技大学 | High-resolution imaging measurement method for reflectivity distribution of high-reflection optical element |
| CN113310902A (en) * | 2021-05-26 | 2021-08-27 | 中国科学院光电技术研究所 | Optical cavity ring-down adaptive optical active transverse mode matching method |
| CN113310902B (en) * | 2021-05-26 | 2023-10-03 | 中国科学院光电技术研究所 | Cavity ring-down self-adaptive optical active transverse mode matching method |
| CN114720402A (en) * | 2022-03-31 | 2022-07-08 | 中国科学院光电技术研究所 | Calibration device for composite sensing passive cavity |
| CN116385547A (en) * | 2023-06-02 | 2023-07-04 | 中国科学院云南天文台 | Astronomical telescope main mirror surface co-phase detection method, system and computer equipment |
| CN116385547B (en) * | 2023-06-02 | 2023-08-01 | 中国科学院云南天文台 | Astronomical telescope main mirror surface co-phase detection method, system and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103869462B (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103869462B (en) | Device for carrying out splicing mirror common-phase control by utilizing cavity ring-down technology | |
| CN105762636B (en) | A method of generating the femtosecond vortex beams of high spatial intensity contrast | |
| CN106441125B (en) | A kind of measured film thickness method and system | |
| CN101995328B (en) | Method for measuring transmission loss of optical element | |
| CN207798009U (en) | A kind of device of the radial displacement sensing based on Gauss vortex light | |
| CN104865576B (en) | A kind of compact ultra-short pulse laser long-distance ranging system and its distance-finding method | |
| CN104597436A (en) | Spectrum light splitting device applied to imaging laser radar | |
| CN105547656B (en) | A kind of method and apparatus of On-line sampling system laser crystal thermal focal length | |
| CN202522516U (en) | Optical transmissivity test device | |
| CN102589684A (en) | Infrared laser measurement image surface alignment device | |
| CN105988261B (en) | A kind of vortex light field generation device | |
| CN105092477A (en) | Optical nonlinearity measuring device and measuring method for nonlinearity thick photonics materials | |
| CN107884079B (en) | Single-shot ultrashort laser pulse width measuring device and measuring method | |
| CN103308903A (en) | Device and method for ranging accuracy testing of laser ranger | |
| CN103809167B (en) | A kind of FP interference type spectral filter resonance frequency locking device and method | |
| CN104808254A (en) | Optical multiple-frequency laser interference system for high-precision absolute gravity meter and application thereof | |
| CN103411932A (en) | LIBS testing system and method based on remote zoom optical multiplexing | |
| KR100763974B1 (en) | Method and apparatus for aligning optical axis for wavefront sensor for mid-infrared band | |
| CN103809166B (en) | A kind of Michelson interference type spectral filter resonant frequency locking device and method | |
| CN103454074B (en) | Method for measuring reflectivity of small-aperture high-reflectivity mirror | |
| CN112346082A (en) | Coherent Doppler wind lidar, method and storage medium | |
| CN206161862U (en) | Ranging system based on TOF | |
| CN210199398U (en) | Control device for light trapping particles | |
| CN104238110A (en) | Parallel light tube wave-front aberration pre-compensation device based on adaptive optics | |
| CN109297585A (en) | A kind of Experiments of Optics system and experimental method based on facula deviation method measurement laser facula focal diameter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |