CN105259667A - An adjusting method for a cylindrical surface stretcher grating pair - Google Patents
An adjusting method for a cylindrical surface stretcher grating pair Download PDFInfo
- Publication number
- CN105259667A CN105259667A CN201510757417.7A CN201510757417A CN105259667A CN 105259667 A CN105259667 A CN 105259667A CN 201510757417 A CN201510757417 A CN 201510757417A CN 105259667 A CN105259667 A CN 105259667A
- Authority
- CN
- China
- Prior art keywords
- grating
- raster
- light source
- aperture
- regulate
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
- G02B5/1819—Plural gratings positioned on the same surface, e.g. array of gratings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The present invention relates femtosecond pulse stretching, and disclose an adjusting method for a cylindrical surface stretcher grating pair. The adjusting system comprises a cylindrical surface convex mirror, a cylindrical surface concave mirror, a broadband light source, an aperture diaphragm, a demo lens, a fiber optical spectrometer and an adjusting platform for installation of the fiber optical spectrometer, a first raster and a second raster. The first raster and the second raster are to be adjusted. Adjusting of the first raster and the second raster employs similar methods. An adjusting raster is perpendicular to output light of the broadband light source. The position of a probe of the fiber optical spectrometer is fixed, and then the rasters are rotated to make the peak wavelength of diffracted light to be the same with a theoretical calculating value. The diffracted light is utilized to enable the raster pair to be parallel. The adjusting method of the invention has advantages that the operation is simple; the precision is high; the application scope is broad; restrictions by raster levels and vertical staggering distances will not exist; working surfaces of the raster pair can be oriented towards the same direction.
Description
Technical field
The present invention relates to femtosecond pulse broadening, is a kind of control method of cylinder stretcher grating pair.The present invention utilizes diffraction light to regulate parallelism of raster pair, and have simple to operate, precision is high, and range of adjustment is wide, is not subject to the advantage of grating level and the distance limit that vertically staggers.
Background technology
Chirped pulse amplification obtains classical way that is ultrashort, ultra intense laser pulse at present, first it utilize stretcher to introduce certain chirp value to femtosecond seed pulse, make pulse strenching, again by after necessary amplification, utilize compressor reducer to introduce the chirp value contrary with stretcher, pulse width is restored.Because the pulse peak power after broadening is greatly diminished, in amplification process subsequently, chirped laser pulse fully can be amplified and can not produce nonlinear effect too early and amplify saturation effect.Broadening system is the important component part of laser aid, and its design, adjustment quality directly affect the quality exporting pulse.
1996, the people such as G.Cheriaux proposed a kind of broadening system of anaberration, were again Offner stretcher.The imaging system of this stretcher is made up of the concave mirror of homocentric placement and convex mirror, the radius-of-curvature of convex mirror is the half of concave mirror radius-of-curvature, convex mirror is placed in concave mirror focus place, make system aberration very little, but shortcoming be to the precision of curved mirror radius-of-curvature and the accuracy requirement of goggle with curve surface lens shape all very high, light path more complicated, regulates difficulty larger.In fact, because this stretcher adopts spherical mirror structure, still there is aberration departing from homocentric place, and the burst pulse with ultra-wide frequency spectrum is had to the color range dispersion of can not ignore.
1997, the spherical mirror of Offner stretcher imaging system was changed into cylindrical mirror by the people such as the JiroItatani in Tokyo Univ Japan's solid state physics laboratory, and this cylinder stretcher structure as shown in Figure 1.Cylinder stretcher can eliminate aberration completely in theory and noise " is warbled ", improves the contrast of laser pulse.But cylindrical mirror machining precision cannot ensure, and employ two blocks of gratings in stretcher, regulate difficulty comparatively large, this is also that widely used reason still failed by this stretcher.In the last few years, along with the demand in the development of cylindrical mirror process technology and engineering, cylinder stretcher caused the concern of scientific research personnel again.How critically to realize the adjustment of cylinder stretcher grating pair, become restriction this kind of broadening system and clap one of technical bottleneck applied in watt device at high energy.
In first technology, the people such as Shanghai Optics and Precision Mechanics institute, Chinese Academy of Sciences Li Chuan use a collimated light source and a right-angle prism, right-angle prism is utilized to regulate parallelism of raster pair, this method is simple to operate, precision is higher, by the restriction of grating pair horizontal separation distance, but shortcoming is: when two grating in the vertical directions do not intersect or the workplace of grating is same direction, this method is inapplicable.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of control method of cylinder stretcher grating pair.The method is simple to operate, and have simple to operate, precision is high, and range of adjustment is wide, is not subject to the advantage of grating level and the distance limit that vertically staggers.
The technical solution adopted in the present invention is:
A kind of control method of cylinder stretcher grating pair, its feature is levied and is that the method needs the device used to comprise: the adjustment platform of wideband light source, aperture, white tiles, fiber spectrometer and installation thereof, first grating to be adjusted and the second grating, the method comprises the steps:
The first step, is placed on the center of curvature of the imaging system that cylinder convex mirror and cylinder concave mirror are formed by the first grating to be adjusted, be specified to picture system axis direction;
Second step, sets placement location and the reference direction of the second grating to be adjusted, and this reference direction will the putting position of the putting position of respectively with the first grating and the setting of the second grating intersect;
3rd step, regulate the height of described wideband light source, make the output light of this wideband light source with the centre-height of the first grating along reference direction horizontal exit, be incident to the first grating through the aperture of aperture and white tiles and reflect successively, regulate angle and the pitching of the first grating, transmitted light path and reflected light path is divided into after making described output light inject described white tiles after the first optical grating reflection, transmitted light path described in maintenance returns through the former road of aperture of aperture, and the output light realizing wideband light source is vertical with the first grating;
4th step, by the probe placement of fiber spectrometer on the reflected light path of white tiles, regulate the locus of fiber spectrum instrument probe, the spectral intensity that fiber spectrometer is recorded is maximum, fixes the probe of this fiber spectrometer;
5th step, the theoretical value λ of the peak wavelength that the first grating fiber spectrometer when desirable duty receives is calculated according to grating equation, regulate the angle of the first grating, the peak wavelength that fiber spectrometer is shown equals theoretical value λ, regulate the striped of the first grating to rotate simultaneously, make the output light maintenance level of the first grating diffration light and wideband light source;
6th step, is placed in placement location by the second grating to be adjusted;
7th step, regulate the height of described wideband light source, make the output light of this wideband light source with the centre-height of the second grating along reference direction horizontal exit, be incident to the second grating through the aperture of aperture and white tiles and reflect successively, regulate angle and the pitching of the second grating, transmitted light path and reflected light path is divided into after making described output light inject described white tiles after the second optical grating reflection, transmitted light path described in maintenance returns through the former road of aperture of aperture, and the output light realizing wideband light source is vertical with the second grating;
8th step, repeats the operation of the 3rd step;
9th step, regulates the angle of the second grating, and the peak wavelength that fiber spectrometer is shown equals theoretical value λ, regulates the striped of the second grating to rotate simultaneously, makes the output light maintenance level of the second grating diffration light and wideband light source; So far, the first grating and the second parallel gratings.Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention is simple to operate, and precision is high, and parallelism of raster pair degree error is less than 20 microradians.
(2) the present invention is applied widely, and not by the restriction of grating incident angle, also not by grating pair level and the distance limit that vertically staggers, the workplace of grating pair can towards same direction.
(3) equipment that the present invention uses is that equipment is commonly used in laboratory, easily obtains.
Accompanying drawing explanation
Fig. 1 is a kind of structural drawing embodiment of conventional cylinder stretcher, and (a) is vertical view, and (b) is side view.
Fig. 2 is the spectrogram of described wideband light source.
Fig. 3 is the reference direction chosen, and observes from vertical view, and reference direction is crossing with the first grating 1 and the second grating 2;
Fig. 4 is the control method of cylinder stretcher grating pair of the present invention, is used for regulating into grating vertical with incident light.
Fig. 5 is the control method of cylinder stretcher grating pair of the present invention, is used for rotating grating to ideal operation state.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.Wherein identical label represents identical parts all the time, describes these embodiments below with reference to the accompanying drawings to explain the present invention.
Fig. 1 is a kind of structural drawing embodiment of conventional cylinder stretcher, a () is vertical view, b () is side view, wherein 1 is the first grating, 2 is the second grating, and 3 is cylinder convex mirror, and 4 is plane total reflective mirror, 5 is cylinder concave mirror, and 01,02 is respectively incident light and emergent light.The cylinder direction of cylinder convex mirror 3 and cylinder concave mirror 5 is in the placement that is parallel to each other, and the center of curvature of cylinder convex mirror 3 and cylinder concave mirror 5 overlaps, first grating 1 is placed in the center of curvature of cylinder convex mirror 3 and cylinder concave mirror 5, second grating 2 and the parallel placement of the first grating 1, distance between second grating 2 and the first grating 1 is determined by the dispersion measure of cylinder stretcher, and plane total reflective mirror 4 is vertical with the optical diffraction of the second grating 2.
The control method of cylinder stretcher grating pair of the present invention, the device used is needed to comprise: wideband light source 6, aperture 7, white tiles 8, fiber spectrometer 9 and the adjustment platform installed thereof, first grating 1 and the second grating 2 to be adjusted, the method comprises the steps:
The first step, is placed on the center of curvature of the imaging system that cylinder convex mirror 3 and cylinder concave mirror 4 are formed by the first grating 1 to be adjusted, be specified to picture system axis direction;
Second step, sets putting position and the reference direction 03 of the second grating 2 to be adjusted, as shown in Figure 3, observes from vertical view, and this reference direction will the putting position of the putting position of respectively with the first grating 1 and the setting of the second grating 2 intersect;
3rd step, regulate the height of described wideband light source 6, make the output light of this wideband light source 6 with the centre-height of the first grating 1 along reference direction 03 horizontal exit, be incident to the first grating 1 through the aperture of aperture 7 and white tiles 8 and reflect successively, regulate angle and the pitching of the first grating 1, transmitted light path and reflected light path is divided into after making described output light inject described white tiles 8 after the first grating 1 reflects, transmitted light path described in maintenance returns through the former road of aperture of aperture 7, and the output light realizing wideband light source 6 is vertical with the first grating 1;
4th step, by the probe placement of fiber spectrometer 9 on the reflected light path of white tiles 8, regulate the locus that fiber spectrometer 9 is popped one's head in, the spectral intensity that fiber spectrometer 9 is recorded is maximum, fixes the probe of this fiber spectrometer 9, as shown in Figure 4;
5th step, the theoretical value λ of the peak wavelength that the first grating 1 fiber spectrometer 9 when desirable duty receives is calculated according to grating equation, regulate the angle of the first grating 1, the peak wavelength that fiber spectrometer 9 is shown equals theoretical value λ, regulate the striped of the first grating 1 to rotate simultaneously, make the diffracted ray of the first grating 1 and the output light maintenance level of wideband light source 6, as shown in Figure 5;
6th step, is placed on the putting position of setting by the second grating 2 to be adjusted;
7th step, regulate the height of described wideband light source 6, make the output light of this wideband light source 6 with the centre-height of the second grating 2 along reference direction 03 horizontal exit, be incident to the second grating 2 through the aperture of aperture 7 and white tiles 8 and reflect successively, regulate angle and the pitching of the second grating 2, transmitted light path and reflected light path is divided into after making described output light inject described white tiles 8 after the second grating 2 reflects, transmitted light path described in maintenance returns through the former road of aperture of aperture 7, and the output light realizing wideband light source 6 is vertical with the second grating 2;
8th step, repeats the operation of the 3rd step;
9th step, regulate the angle of the second grating 2, the peak wavelength that fiber spectrometer 9 is shown equals theoretical value λ, regulates the striped of the second grating 2 to rotate simultaneously, makes the diffracted ray of the second grating 2 and the output light maintenance level of wideband light source 6; So far, the first grating 1 is parallel with the second grating 2.
The present invention is mainly used in the adjustment of cylinder stretcher grating pair.
Although specifically describe with reference to exemplary embodiment of the present invention and show the present invention, but will be understood by those skilled in the art that, when not departing from the spirit and scope of the present invention be defined by the claims, the various changes of form and details can be carried out to it.
Claims (1)
1. the control method of a cylinder stretcher grating pair, it is characterized in that the device that the method needs use comprises: wideband light source (6), aperture (7), white tiles (8), fiber spectrometer (9) and the adjustment platform installed thereof, first grating (1) to be adjusted and the second grating (2), the method comprises the steps:
The first step, is placed on the center of curvature of the imaging system that cylinder convex mirror (3) and cylinder concave mirror (4) are formed by the first grating (1) to be adjusted, be specified to picture system axis direction;
Second step, set putting position and the reference direction (03) of the second grating (2) to be adjusted, this reference direction will intersect by the putting position that sets of the putting position of respectively with the first grating (1) and the second grating (2);
3rd step, regulate the height of described wideband light source (6), make the output light of this wideband light source (6) with the centre-height of the first grating (1) along reference direction (03) horizontal exit, be incident to the first grating (1) through the aperture of aperture (7) and white tiles (8) and reflect successively, regulate angle and the pitching of the first grating (1), transmitted light path and reflected light path is divided into after making described output light inject described white tiles (8) after the first grating (1) reflection, transmitted light path described in maintenance returns through the former road of aperture of aperture (7), the output light realizing wideband light source (6) is vertical with the first grating (1),
4th step, by the probe placement of fiber spectrometer (9) on the reflected light path of white tiles (8), regulate the locus that fiber spectrometer (9) is popped one's head in, the spectral intensity that fiber spectrometer (9) is recorded is maximum, fixes the probe of this fiber spectrometer (9);
5th step, the theoretical value λ of the first grating (1) peak wavelength that fiber spectrometer (9) receives when desirable duty is calculated according to grating equation, regulate the angle of the first grating (1), the peak wavelength that fiber spectrometer (9) is shown equals theoretical value λ, regulate the striped of the first grating (1) to rotate simultaneously, make the output light of the diffracted ray of the first grating (1) and wideband light source (6) keep level;
6th step, is placed on putting position by the second grating (2) to be adjusted;
7th step, regulate the height of described wideband light source (6), make the output light of this wideband light source (6) with the centre-height of the second grating (2) along reference direction (03) horizontal exit, be incident to the second grating (2) through the aperture of aperture (7) and white tiles (8) and reflect successively, regulate angle and the pitching of the second grating (2), transmitted light path and reflected light path is divided into after making described output light inject described white tiles (8) after the second grating (2) reflection, transmitted light path described in maintenance returns through the former road of aperture of aperture (7), the output light realizing wideband light source (6) is vertical with the second grating (2),
8th step, repeats the operation of the 3rd step;
9th step, regulate the angle of the second grating (2), the peak wavelength that fiber spectrometer (9) is shown equals theoretical value λ, regulate the striped of the second grating (2) to rotate simultaneously, make the output light of the diffracted ray of the second grating (2) and wideband light source (6) keep level; So far, the first grating (1) is parallel with the second grating (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757417.7A CN105259667B (en) | 2015-11-09 | 2015-11-09 | The adjusting method of cylinder stretcher grating pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757417.7A CN105259667B (en) | 2015-11-09 | 2015-11-09 | The adjusting method of cylinder stretcher grating pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105259667A true CN105259667A (en) | 2016-01-20 |
| CN105259667B CN105259667B (en) | 2017-07-14 |
Family
ID=55099420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510757417.7A Active CN105259667B (en) | 2015-11-09 | 2015-11-09 | The adjusting method of cylinder stretcher grating pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105259667B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123920A (en) * | 2017-06-28 | 2017-09-01 | 中国工程物理研究院激光聚变研究中心 | A kind of first dress method of grating in large-scale ultra-short pulse laser compressor reducer |
| CN109066275A (en) * | 2018-10-23 | 2018-12-21 | 广东华快光子科技有限公司 | A kind of pulse stretcher structure convenient for extension |
| CN110609372A (en) * | 2019-09-20 | 2019-12-24 | 中国工程物理研究院激光聚变研究中心 | Debugging method for parallelism of grating surfaces of compressor of ultrashort pulse laser system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595272A (en) * | 2004-07-05 | 2005-03-16 | 天津大学 | Miniaturization pulse stretcher design method for compensating high material dispersion of regenerative amplifier |
| CN102331299A (en) * | 2011-06-02 | 2012-01-25 | 苏州大学 | Spectroscopic imaging system of flat-field imaging spectrometer |
| CN103808267A (en) * | 2012-11-12 | 2014-05-21 | 中国航空工业第六一八研究所 | Spectrograph-based optical displacement sensor signal demodulation method |
| US20150022811A1 (en) * | 2013-07-19 | 2015-01-22 | Corning Incorporated | Compact hyperspectral imaging system |
| CN104634280A (en) * | 2015-02-03 | 2015-05-20 | 中国科学院上海光学精密机械研究所 | Method for measuring absolute angle and rotating angle of universal horizontal turntable |
-
2015
- 2015-11-09 CN CN201510757417.7A patent/CN105259667B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595272A (en) * | 2004-07-05 | 2005-03-16 | 天津大学 | Miniaturization pulse stretcher design method for compensating high material dispersion of regenerative amplifier |
| CN102331299A (en) * | 2011-06-02 | 2012-01-25 | 苏州大学 | Spectroscopic imaging system of flat-field imaging spectrometer |
| CN103808267A (en) * | 2012-11-12 | 2014-05-21 | 中国航空工业第六一八研究所 | Spectrograph-based optical displacement sensor signal demodulation method |
| US20150022811A1 (en) * | 2013-07-19 | 2015-01-22 | Corning Incorporated | Compact hyperspectral imaging system |
| CN104634280A (en) * | 2015-02-03 | 2015-05-20 | 中国科学院上海光学精密机械研究所 | Method for measuring absolute angle and rotating angle of universal horizontal turntable |
Non-Patent Citations (1)
| Title |
|---|
| 黄敏: "飞秒激光脉冲展宽技术的研究", 《信息科技辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123920A (en) * | 2017-06-28 | 2017-09-01 | 中国工程物理研究院激光聚变研究中心 | A kind of first dress method of grating in large-scale ultra-short pulse laser compressor reducer |
| CN107123920B (en) * | 2017-06-28 | 2019-02-12 | 中国工程物理研究院激光聚变研究中心 | A kind of first dress method of grating in large size ultra-short pulse laser compressor |
| CN109066275A (en) * | 2018-10-23 | 2018-12-21 | 广东华快光子科技有限公司 | A kind of pulse stretcher structure convenient for extension |
| CN109066275B (en) * | 2018-10-23 | 2023-05-19 | 广东华奕激光技术有限公司 | Pulse stretcher structure convenient to expand |
| CN110609372A (en) * | 2019-09-20 | 2019-12-24 | 中国工程物理研究院激光聚变研究中心 | Debugging method for parallelism of grating surfaces of compressor of ultrashort pulse laser system |
| CN110609372B (en) * | 2019-09-20 | 2021-05-18 | 中国工程物理研究院激光聚变研究中心 | Debugging method for parallelism of grating surfaces of compressor of ultrashort pulse laser system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105259667B (en) | 2017-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103196555B (en) | Be applied to the spectrum programmable light-source system of ultraphotic spectrum calibration | |
| KR102363017B1 (en) | A method for projection comprising a projection device and optical free-form surfaces | |
| CN101231383B (en) | Light spectrum modulation reshaping device for chirp pulse amplified self-collimation recessed surface | |
| CN101231385B (en) | Light spectrum reshaping modulating method for chirp pulse amplification | |
| CN103069328B (en) | Optical system for laser optical rectification and wave front control | |
| CN101231384B (en) | Light spectrum modulation reshaping device for chirp pulse amplified self-collimation recessed surface | |
| CN102155990B (en) | Debugging method of echelle grating spectrograph | |
| CN105259667A (en) | An adjusting method for a cylindrical surface stretcher grating pair | |
| CN102566235B (en) | Light source apparatus, light source generation method and laser projector containing light source apparatus | |
| CN101231382A (en) | Light spectrum modulation reshaping device for chirp pulse amplification | |
| CN1529830A (en) | Diffraction shaping of intensity distribution of spatially partially coherent light beam | |
| CN102589701B (en) | Method for expanding application bandwidth of spatial heterodyne interferometer | |
| CN103616074B (en) | Wavelength calibration method for digital micromirror grating spectrometer | |
| CN105182674A (en) | Laser light source special for laser projector | |
| CN103576430A (en) | Spectral image projection method and device thereof | |
| CN108027132A (en) | Lighting device | |
| CN204240178U (en) | Laser searchlight | |
| CN108152991A (en) | The assembly method and device of a kind of optical lens | |
| CN102244352B (en) | Method for amplifying short pulse laser | |
| CN201166732Y (en) | Self-collimating plane modulated spectrum modulation shaping apparatus for amplifying chirp pulse | |
| CN203465002U (en) | Transmission grating spectrometer | |
| US10663747B2 (en) | Raman despeckling with spectral control | |
| CN106802185A (en) | The narrow linewidth Terahertz light source and spectrometer, imager of a kind of frequency continuously adjustabe | |
| CN202886732U (en) | Compensatory light source system and train operation fault dynamic image detection equipment | |
| CN104570379A (en) | Reflection-type grating pair pulse width stretcher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |