CN2777598Y - Four grating laser pulse compressor - Google Patents
Four grating laser pulse compressor Download PDFInfo
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- CN2777598Y CN2777598Y CN 200520033641 CN200520033641U CN2777598Y CN 2777598 Y CN2777598 Y CN 2777598Y CN 200520033641 CN200520033641 CN 200520033641 CN 200520033641 U CN200520033641 U CN 200520033641U CN 2777598 Y CN2777598 Y CN 2777598Y
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- grating
- mirror
- turning back
- gratings
- adjustment rack
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Abstract
The utility model provides a four-grating laser pulse compressor. The utility model is characterized in that a compressor of the utility model comprises gratings (1, 2, 3, 4), adjusting racks (5, 6), a of lead-in mirror (7) and two back-folding mirrors (8, 9). The four gratings are divided into two groups which are arranged in parallel, the gratings (1, 4) are in one group, and the gratings (2, 3) are in the other group. Two gratings of each group are arranged on the same adjusting rack from top to bottom. The utility model can realize the double-pass compression of the chirped pulse with larger caliber and overcome the transversal spectrum moving existing in the single-pass compression. The utility model has the advantages of less occupying space and easy regulation.
Description
Technical field
The utility model belongs to the high power ultra-short pulse laser field of using CPA (chirped pulse amplification) technology, is specifically related to a kind of four grating laser pulse compressor reducers.
Background technology
CPA (chirped pulse amplification) technology is to be to have the long pulse of warbling with a short-pulse laser broadening at first, in amplifier, amplify then, again it is compressed to short pulse after arriving energy needed, to obtain sufficiently high output power and to focus on power density.Do like this and can overcome effectively and weaken in the short-pulse laser amplification process because high peak power to damage and various nonlinear effect that optical element brings, improves energy extraction efficiency greatly.The ultimate principle of carrying out pulse strenching and compression with grating pair is to utilize the grating diffration effect, usually usefulness is first-order diffraction light, make light different delay of process in grating pair of different wave length, stretcher provides positive GVD (Group Velocity Dispersion) (GVD), and compressor reducer provides negative GVD (Group Velocity Dispersion), makes pulse obtain broadening and compression.
Basic broadening, compressed configuration is Martinez type and Treacy type double grating chirped device in the prior art.But in high-energy, high-power laser pulse device, because the beam size after amplifying is bigger, and the large scale grating is difficult for obtaining, and often adopts four grating flush system structures,
In the quarterly report of 2003 the 96th volumes of U.S. Rochester University, disclose one piece of article (p.207～211) of " The Coherent Additionof Gratings for Pulse Compression in High-Energy Laser Systems " by name, wherein described a kind of compressor reducer (see figure 3) of four grating flush system structures.The compressor reducer of this structure takes up room greatly, lays difficulty, regulates inconvenience.
Summary of the invention
The utility model provides a kind of four grating laser pulse compressor reducers, can realize the round trip compression of larger caliber chirped pulse, it is moving both can to have overcome the horizontal spectral shift that exists in the one way compression, can overcome the shortcoming that the space takies greatly in the flush system structure, regulate inconvenience again.
Four grating laser pulse compressor reducers of the present utility model comprise: four blocks of gratings, two adjustment racks, an importing mirror and two mirrors of turning back.Be characterized in: four blocks of gratings are divided into two groups of parallel placement, two blocks of gratings in every group are arranged above and below and place on the same adjustment rack, each adjustment rack supports two blocks of gratings simultaneously, can wholely rotate and translation, adjustment rack is provided with knob, can adjust the rotation of groove in the grating face and the luffing angle of grating of monolithic grating respectively, make compressor reducer be convenient to regulate.Side between two groups of gratings of parallel placement is provided with light beam and imports mirror, and incident light arrives grating after importing mirror reflection; Opposite side between two groups of gratings of parallel placement is provided with two mirrors of turning back, two mutually vertical placements of the mirrors of turning back, and the intersection on two planes, mirror place of turning back and light beam to arrive the preceding transmission direction of mirror of turning back vertical, the mirror of turning back places on the three-dimensional trim holder.
Laser pulse compressor configuration compactness of the present utility model, easy to adjust can be compressed to the utmost point short status with the Long Pulse LASER of warbling of the larger caliber of broadening.Compare with four gratings compressors of the prior art, the shared space of compressor reducer of the present utility model reduces greatly, is convenient to install.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of four grating laser pulse compressor reducer embodiment of the present utility model.
Fig. 2 is the grating adjustment rack synoptic diagram of four grating laser pulse compressor reducer embodiment of the present utility model.
Fig. 3 is four gratings compressor structural representations of the prior art
Embodiment
Among Fig. 1, the structure of four grating laser pulse compressor reducers comprises: grating (1,2,3,4), adjustment rack (5,6), importing mirror 7 and the mirror of turning back (8,9).Four blocks of gratings are divided into two groups of parallel placement, and grating 1 and grating 4 are one group, and being arranged above and below places on the adjustment rack 5; Grating 2 and grating 3 are one group, and being arranged above and below places on the adjustment rack 6.Adjustment rack (5,6) is provided with adjusting knob.Side between the adjustment rack (5,6) of two groups of gratings of parallel placement is provided with light beam and imports mirror 7, and incident light arrives grating 1 after importing mirror 7 reflections; Be provided with the mutually vertical mirror of placing of turning back (8,9) at opposite side, and the intersection on turn back mirror 8 and the plane, mirror 9 place of turning back and the light beam arrival preceding transmission direction of mirror 8 of turning back is vertical, the mirror of turning back (8,9) places on the three-dimensional trim holder.
Incident light arrives grating 1 after importing mirror 7 reflections, diffraction on grating 1, and first-order diffraction light arrives grating 2, arrives the turn back mirror 8 and the mirror 9 of turning back successively behind the diffraction once more through grating 2, then penetrates to grating 4 through grating 3.The transmission direction that the placement of mirror (8,9) of turning back should make light beam leave when turning back mirror 9 is parallel with the transmission direction before light beam arrives the mirror 8 of turning back, so, turning back mirror (8,9) must be vertical mutually, and the transmission direction that the intersection on their planes, place and light beam arrive before the mirror 8 of turning back must be vertical, and this can place on the three-dimensional trim holder and realize by the mirror 8 of will turning back, the mirror 9 of turning back.Two blocks of gratings in every group are positioned at same plane, and two planes at two groups of grating places are parallel to each other.Compare with the flush system structure, the shared space of four grating laser pulse compressor reducers of the present utility model reduces greatly.
In the laboratory, adopt the utility model to obtain 8.6 joule of 30 femtosecond (1 femtosecond=10
-15Second) high power ultra-short pulse laser.
Claims (3)
1. grating laser pulse compressor reducer is characterized in that: described compressor reducer comprises grating (1,2,3,4), adjustment rack (5,6), imports mirror (7) and the mirror of turning back (8,9); Grating (1,2,3,4) is divided into two groups of parallel placement, and grating (1) and grating (4) are one group, and being arranged above and below places on the adjustment rack (5); Grating (2) and grating (3) are one group, are arranged above and below to place on the adjustment rack (6); Side between the adjustment rack (5,6) of two groups of gratings of parallel placement is provided with light beam and imports mirror (7); Be provided with the mutually vertical mirror of placing of turning back (8,9) at opposite side, the intersection on the mirror of turning back (8) and the mirror of turning back (9) plane, place and the light beam arrival preceding transmission direction of mirror (8) of turning back is vertical, and the mirror of turning back (8,9) places on the three-dimensional trim holder.
2. according to the described four grating laser pulse compressor reducers of claim 1, it is characterized in that: the side of described adjustment rack is provided with adjusting knob (10,11).
3. according to the described four grating laser pulse compressor reducers of claim 1, it is characterized in that: also be provided with the motor-driven pull bar (12,13) of adjusting the grating luffing angle on the described adjustment rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033641 CN2777598Y (en) | 2005-03-21 | 2005-03-21 | Four grating laser pulse compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033641 CN2777598Y (en) | 2005-03-21 | 2005-03-21 | Four grating laser pulse compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2777598Y true CN2777598Y (en) | 2006-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033641 Expired - Fee Related CN2777598Y (en) | 2005-03-21 | 2005-03-21 | Four grating laser pulse compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244352A (en) * | 2011-06-13 | 2011-11-16 | 中国工程物理研究院激光聚变研究中心 | Method for amplifying short pulse laser |
| CN103365029A (en) * | 2013-07-15 | 2013-10-23 | 上海激光等离子体研究所 | Foldable objective image stitching grating pulse compressor and stitching status diagnosis system |
| CN104570377A (en) * | 2015-01-04 | 2015-04-29 | 中国科学院上海光学精密机械研究所 | Laser chirp pulse beam splitting loop optical grating compressor |
| CN104570379A (en) * | 2015-01-20 | 2015-04-29 | 中国科学院上海应用物理研究所 | Reflection-type grating pair pulse width stretcher |
| CN109725431A (en) * | 2019-01-15 | 2019-05-07 | 中国工程物理研究院上海激光等离子体研究所 | A kind of compact heavy-caliber optical grating compressor and its parallel gratings degree adjusting method |
-
2005
- 2005-03-21 CN CN 200520033641 patent/CN2777598Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244352A (en) * | 2011-06-13 | 2011-11-16 | 中国工程物理研究院激光聚变研究中心 | Method for amplifying short pulse laser |
| CN102244352B (en) * | 2011-06-13 | 2012-07-04 | 中国工程物理研究院激光聚变研究中心 | Method for amplifying short pulse laser |
| CN103365029A (en) * | 2013-07-15 | 2013-10-23 | 上海激光等离子体研究所 | Foldable objective image stitching grating pulse compressor and stitching status diagnosis system |
| CN103365029B (en) * | 2013-07-15 | 2015-12-23 | 中国工程物理研究院上海激光等离子体研究所 | A kind of folding article is as jointing grating pulse shortener and splicing condition diagnosing system |
| CN104570377A (en) * | 2015-01-04 | 2015-04-29 | 中国科学院上海光学精密机械研究所 | Laser chirp pulse beam splitting loop optical grating compressor |
| CN104570379A (en) * | 2015-01-20 | 2015-04-29 | 中国科学院上海应用物理研究所 | Reflection-type grating pair pulse width stretcher |
| CN104570379B (en) * | 2015-01-20 | 2017-07-18 | 中国科学院上海应用物理研究所 | A kind of reflection-type grating is to pulse stretcher device |
| CN109725431A (en) * | 2019-01-15 | 2019-05-07 | 中国工程物理研究院上海激光等离子体研究所 | A kind of compact heavy-caliber optical grating compressor and its parallel gratings degree adjusting method |
| CN109725431B (en) * | 2019-01-15 | 2020-12-25 | 中国工程物理研究院上海激光等离子体研究所 | Compact large-diameter grating compressor and grating parallelism adjusting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060503 Termination date: 20120321 |