CN103259184A - Repetition frequency neodymium glass laser - Google Patents
Repetition frequency neodymium glass laser Download PDFInfo
- Publication number
- CN103259184A CN103259184A CN2013101393889A CN201310139388A CN103259184A CN 103259184 A CN103259184 A CN 103259184A CN 2013101393889 A CN2013101393889 A CN 2013101393889A CN 201310139388 A CN201310139388 A CN 201310139388A CN 103259184 A CN103259184 A CN 103259184A
- Authority
- CN
- China
- Prior art keywords
- convex lens
- reflective mirror
- total reflective
- film polarizer
- amplification medium
- 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
Landscapes
- Lasers (AREA)
Abstract
A repetition frequency neodymium glass laser comprises an oscillator. A concave lens, a first convex lens, a soft-edge diaphragm, a first film polarizer, a half wave plate, a faraday activizer, a second film polarizer, a second convex lens, a first space filter, a third convex lens, a first amplification medium, a quarter wave plate and a first all-trans mirror with the same optical axis are sequentially arranged on the optical axis of output laser light of the oscillator. An included angle between the first film polarizer and the optical axis is 135 degrees, an included angle between the second film polarizer and the optical axis is 45 degrees, a second full-trans mirror is arranged in the reflection direction of the second film polarizer, a third full-trans mirror is positioned on a reflection light path of the first film polarizer, and a fourth convex lens, a second space filter, a fifth convex lens and a second amplification medium are sequentially arranged on a reflection light path of the third fall-trans light path. The repetition frequency neodymium glass laser has the advantages of being large in energy magnification time and wide in application prospect based on four-stroke amplification and four-stroke image transfer.
Description
Technical field
The present invention relates to neodymium glass laser, particularly a kind of repetition rate neodymium glass laser.
Background technology
Along with the development of Solid State Laser technology, neodymium glass laser is subjected to extensive attention in recent years.
Technology 1[Qiu Ji Si of elder generation, Fanzhong dimension, laser and optoelectronics progress .1401 (6), 80～83 (2010)] method of neodymium glass round trip amplification proposed, its principle is to utilize optical splitter, quarter-wave plate and total reflective mirror, makes the light beam of oscillator output come and go twice just outgoing in amplification medium.But its energy multiplication factor has only 70 times.
Technology 2[R.A.Sacks formerly, W.W.Williams, Proc.SPIE, Solid State Lasers for Application to Inertial Confinement Fusion:Second Annual International Conference.3047 (526), space filtering-as the method for transmitting has been proposed 526～539 (1997)], its principle is to add diaphragm to constitute space filtering-as transmission system at the confocal some place of optical telescope two lens, the space filtering of cascade-be combined as the transmission system laser chain of relaying imaging, it projects next stage with the real image of divergent laser beam, to reduce the effective propagation path of light beam.But this technology is separated with the multipass amplification, just real image is delivered to another amplification medium by an amplification medium; And it is that real image is formed in the amplification medium place, and required spatial filter is more.
Summary of the invention
The invention provides a kind of repetition rate nd glass laser apparatus, but this device outgoing 0.1Hz repetition rate, joule magnitude light beam, and have the big characteristics of energy multiplication factor.
Technical solution of the present invention is as follows:
A kind of repetition rate neodymium glass laser, characteristics are that its formation comprises oscillator, be the concavees lens with optical axis successively on the optical axis of this oscillator output laser, first convex lens, soft aperture slot, the first film polarizer, / 2nd wave plates, Faraday polarization apparatus, the second film polarizer, second convex lens, first spatial filter, the 3rd convex lens, first amplification medium, quarter-wave plate and first total reflective mirror, described the first film polarizer becomes 135 ° with optical axis, the described second film polarizer and optical axis are at 45, reflection direction at the described second film polarizer is placed second total reflective mirror, reflected light path at described the first film polarizer is placed the 3rd total reflective mirror, is the 4th convex lens successively on the reflected light path of the 3rd total reflective mirror, second spatial filter, the 5th convex lens and second amplification medium;
The material of described first amplification medium and second amplification medium is NAP2 type neodymium glass;
The aperture of described first spatial filter is positioned on the public focus of second convex lens and the 3rd convex lens;
The aperture of described second spatial filter is positioned on the public focus of the 4th convex lens and the 5th convex lens;
The focal length of the focal length of described second convex lens and the 3rd convex lens is f
1The focal length of the focal length of described the 4th convex lens and the 5th convex lens is f
2
The position relation of described second convex lens, the 3rd convex lens, soft aperture slot and first total reflective mirror satisfies:
l
1+l
2＝2f
1
Wherein, l
1Be the distance of soft aperture slot to second convex lens, l
2It is the distance of first total reflective mirror to the, three convex lens;
Described second total reflective mirror to second convex lens apart from l
3With described the 3rd total reflective mirror to second convex lens apart from l
4With soft aperture slot to second convex lens apart from l
1Equate;
The position relation of described the 4th convex lens, the 5th convex lens and the 3rd total reflective mirror, second amplification medium satisfies:
l
5+l
6＝2f
2
Wherein, l
5Be the distance of the 3rd total reflective mirror to the four convex lens, l
6It is the distance of second amplification medium to the, five convex lens.
Technique effect of the present invention is as follows:
Apparatus of the present invention are amplified the combination of transmitting with the quadruple pass picture by quadruple pass, all use picture transmission technology in each journey that quadruple pass amplifies, and have improved beam quality when the pulse of oscillator outgoing is effectively amplified.Improved multiplication factor by the quadruple pass amplification; Repeat operating frequency by using NAP2 type neodymium glass to improve.By object plane being imaged in the use that has reduced spatial filter on the speculum.
Description of drawings
Fig. 1 is the schematic top plan view of repetition rate neodymium glass laser apparatus structure of the present invention
Among Fig. 1: the 1-oscillator, the 2-concavees lens, 3-first convex lens, the 4-soft aperture slot, 5-the first film polarizer, 6-1/2nd wave plates, the 7-Faraday polarization apparatus, the 8-second film polarizer, 9-second convex lens, 10-first spatial filter, 11-the 3rd convex lens, 12-first amplification medium, the 13-quarter-wave plate, 14-first total reflective mirror, 15-second total reflective mirror, 16-the 3rd total reflective mirror, 17-the 4th convex lens, 18-second spatial filter, 19-the 5th convex lens, 20-second amplification medium
Embodiment
Below in conjunction with embodiment and accompanying drawing apparatus of the present invention are further specified, but should not limit protection scope of the present invention with this.
See also Fig. 1 earlier, as seen from the figure, the formation of repetition rate neodymium glass laser of the present invention comprises oscillator 1, be the concavees lens 2 with optical axis successively on the optical axis of this oscillator 1 output laser, first convex lens 3, soft aperture slot 4, the first film polarizer 5, / 2nd wave plates 6, Faraday polarization apparatus 7, the second film polarizer 8, second convex lens 9, first spatial filter 10, the 3rd convex lens 11, first amplification medium 12, quarter-wave plate 13 and first total reflective mirror 14, described the first film polarizer 5 becomes 135 ° with optical axis, the described second film polarizer 8 is at 45 with optical axis, reflection direction at the described second film polarizer 8 is placed second total reflective mirror 15, reflected light path at described the first film polarizer 5 is placed the 3rd total reflective mirror 16, is the 4th convex lens 17 successively on the reflected light path of the 3rd total reflective mirror 16, second spatial filter 18, the 5th convex lens 19 and second amplification medium 20;
The material of described first amplification medium and second amplification medium is NAP2 type neodymium glass;
The aperture of described first spatial filter is positioned on the public focus of second convex lens and the 3rd convex lens;
The aperture of described second spatial filter is positioned on the public focus of the 4th convex lens and the 5th convex lens;
The focal length of the focal length of described second convex lens and the 3rd convex lens is f
1The focal length of the focal length of described the 4th convex lens and the 5th convex lens is f
2
The position relation of described second convex lens, the 3rd convex lens, soft aperture slot and first total reflective mirror satisfies:
l
1+l
2＝2f
1
Wherein, l
1Be the distance of soft aperture slot to second convex lens, l
2It is the distance of first total reflective mirror to the, three convex lens;
Described second total reflective mirror to second convex lens apart from l
3With described the 3rd total reflective mirror to second convex lens apart from l
4With soft aperture slot to second convex lens apart from l
1Equate;
The position relation of described the 4th convex lens, the 5th convex lens and the 3rd total reflective mirror, second amplification medium satisfies:
l
5+l
6＝2f
2
Wherein, l
5Be the distance of the 3rd total reflective mirror to the four convex lens, l
6It is the distance of second amplification medium to the, five convex lens.
The course of work of the present invention is:
The laser beam that sends from oscillator 1 passes through concavees lens 2, enter the first film polarizer 5 behind first convex lens 3 and the soft aperture slot 4 and become line polarisation P light, behind the isolator through 1/2nd wave plates 6 and Faraday polarization apparatus 7 compositions, again by the second film polarizer 8, second convex lens 9 enter first spatial filter 10, the 3rd convex lens 11 and first amplification medium 12, become rotatory polarization through quarter-wave plate 13 then, after 14 reflections of first total reflective mirror, pass through quarter-wave plate 15 again, become the s polarised light, then for the second time by first amplification medium 12, the 3rd convex lens 11, first spatial filter 10 and second convex lens 9, this moment is because light beam is s light, can't pass through the second film polarizer 8, so with beam reflection to second total reflective mirror 15, reflex to the second film polarizer 8 again through second total reflective mirror 15, reflected back second convex lens 9, first spatial filter 10, the 3rd convex lens 11 and the first amplification medium 12(amplify for the third time).After amplifying outgoing, first amplification medium 12 reflects through described quarter-wave plate 13 with by first total reflective mirror 14 again, become the p polarization again by quarter-wave plate 13 back light beams again, the 4th time by behind first amplification medium 12 and first spatial filter 10, by the second film polarizer 8 and the isolator formed by 1/2nd wave plates 6 and Faraday polarization apparatus 7, through the 3rd total reflective mirror 16 light is imported the 4th convex lens 17 in 5 reflections of the first film polarizer, second spatial filter 18, after the 5th convex lens 19 and second amplification medium 20 amplify, last outgoing.
Set-up procedure of the present invention is as follows:
1) aperture position of adjustment first spatial filter 10 makes aperture be positioned at the focus place of second convex lens 9, makes the light beam of incident pass aperture.Place the 3rd convex lens 11 in first spatial filter, 10 backs, make the 3rd convex lens 11 and second convex lens 9 confocal, therefore light beam becomes directional light again, by first amplification medium 12, quarter-wave plate 13 and first total reflective mirror 14 are regulated first total reflective mirror 14 and are made reverberation also pass through the aperture of first spatial filter 10;
2) regulate second total reflective mirror 15, make the aperture that passes through first spatial filter 10 from the light of second total reflective mirror, 15 reflections;
3) regulate the 3rd total reflective mirror 16, make the light of its reflection through the 4th convex lens 17, by the aperture of second spatial filter 18, then pass through second amplification medium 20 through the 5th convex lens 19.
Experiment shows that the present invention amplifies the combination of transmitting with the quadruple pass picture by quadruple pass, all uses picture transmission technology in each journey that quadruple pass amplifies, and has improved beam quality when the pulse of oscillator outgoing is effectively amplified.Improved multiplication factor by the quadruple pass amplification; Repeat operating frequency by using NAP2 type neodymium glass to improve.By object plane being imaged in the use that has reduced spatial filter on the speculum.But this device outgoing 0.1Hz repetition rate, joule magnitude light beam, and have the characteristics of energy multiplication factor big (330 times).
Claims (1)
1. repetition rate neodymium glass laser, be characterised in that its formation comprises oscillator (1), be the concavees lens (2) with optical axis successively on the optical axis of this oscillator (1) output laser, first convex lens (3), soft aperture slot (4), the first film polarizer (5), / 2nd wave plates (6), Faraday polarization apparatus (7), the second film polarizer (8), second convex lens (9), first spatial filter (10), the 3rd convex lens (11), first amplification medium (12), quarter-wave plate (13) and first total reflective mirror (14), described the first film polarizer (5) becomes 135 ° with optical axis, the described second film polarizer (8) is at 45 with optical axis, reflection direction at the described second film polarizer (8) is placed second total reflective mirror (15), reflected light path at described the first film polarizer (5) is placed the 3rd total reflective mirror (16), is the 4th convex lens (17) successively on the reflected light path of the 3rd total reflective mirror (16), second spatial filter (18), the 5th convex lens (19) and second amplification medium (20);
The material of described first amplification medium and second amplification medium is NAP2 type neodymium glass;
The aperture of described first spatial filter is positioned on the public focus of second convex lens and the 3rd convex lens;
The aperture of described second spatial filter is positioned on the public focus of the 4th convex lens and the 5th convex lens;
The focal length of the focal length of described second convex lens and the 3rd convex lens is f
1The focal length of the focal length of described the 4th convex lens and the 5th convex lens is f
2
The position relation of described second convex lens, the 3rd convex lens, soft aperture slot and first total reflective mirror satisfies:
l
1+l
2＝2f
1
Wherein, l
1Be the distance of soft aperture slot to second convex lens, l
2It is the distance of first total reflective mirror to the, three convex lens;
Described second total reflective mirror to second convex lens apart from l
3With described the 3rd total reflective mirror to second convex lens apart from l
4With soft aperture slot to second convex lens apart from l
1Equate;
The position relation of described the 4th convex lens, the 5th convex lens and the 3rd total reflective mirror, second amplification medium satisfies:
l
5+l
6＝2f
2
Wherein, l
5Be the distance of the 3rd total reflective mirror to the four convex lens, l
6It is the distance of second amplification medium to the, five convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139388.9A CN103259184B (en) | 2013-04-19 | 2013-04-19 | Repetition frequency neodymium glass laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139388.9A CN103259184B (en) | 2013-04-19 | 2013-04-19 | Repetition frequency neodymium glass laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103259184A true CN103259184A (en) | 2013-08-21 |
| CN103259184B CN103259184B (en) | 2015-03-25 |
Family
ID=48962964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310139388.9A Active CN103259184B (en) | 2013-04-19 | 2013-04-19 | Repetition frequency neodymium glass laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103259184B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384932A (en) * | 2016-11-29 | 2017-02-08 | 中国工程物理研究院激光聚变研究中心 | Multi-pass laser amplifier based on wavefront distortion correction and usage method thereof |
| CN107196182A (en) * | 2017-07-19 | 2017-09-22 | 中国工程物理研究院激光聚变研究中心 | A kind of off-axis eight journeys laser amplification device |
| CN113514915A (en) * | 2021-06-18 | 2021-10-19 | 山东大学 | Vacuum filtering module for high-power laser and manufacturing method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1741324A (en) * | 2005-07-15 | 2006-03-01 | 复旦大学 | Method for raising outputting pulse quality of pw grade Nd glass laser system |
| US20110058249A1 (en) * | 2009-09-04 | 2011-03-10 | Lawrence Livermore National Security, Llc | Method and system for compact and efficient high energy pulsed laser amplifier |
| CN102621704A (en) * | 2012-03-22 | 2012-08-01 | 北京国科世纪激光技术有限公司 | Four-pass laser amplifying device |
-
2013
- 2013-04-19 CN CN201310139388.9A patent/CN103259184B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1741324A (en) * | 2005-07-15 | 2006-03-01 | 复旦大学 | Method for raising outputting pulse quality of pw grade Nd glass laser system |
| US20110058249A1 (en) * | 2009-09-04 | 2011-03-10 | Lawrence Livermore National Security, Llc | Method and system for compact and efficient high energy pulsed laser amplifier |
| CN102621704A (en) * | 2012-03-22 | 2012-08-01 | 北京国科世纪激光技术有限公司 | Four-pass laser amplifying device |
Non-Patent Citations (3)
| Title |
|---|
| 刘代中 等: "4程放大光路自动准直系统研究", 《强激光与粒子束》 * |
| 王之桐 等: "激光二极管侧抽运Nd:YLF多程放大实验研究", 《中国激光》 * |
| 王方 等: "内腔四程放大高功率激光系统寄生振荡", 《强激光与粒子束》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384932A (en) * | 2016-11-29 | 2017-02-08 | 中国工程物理研究院激光聚变研究中心 | Multi-pass laser amplifier based on wavefront distortion correction and usage method thereof |
| CN106384932B (en) * | 2016-11-29 | 2023-08-11 | 中国工程物理研究院激光聚变研究中心 | Multi-pass laser amplifier based on wavefront distortion correction and application method thereof |
| CN107196182A (en) * | 2017-07-19 | 2017-09-22 | 中国工程物理研究院激光聚变研究中心 | A kind of off-axis eight journeys laser amplification device |
| CN107196182B (en) * | 2017-07-19 | 2023-08-15 | 中国工程物理研究院激光聚变研究中心 | Off-axis eight-pass laser amplifying device |
| CN113514915A (en) * | 2021-06-18 | 2021-10-19 | 山东大学 | Vacuum filtering module for high-power laser and manufacturing method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103259184B (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kelly et al. | OMEGA EP: High-energy petawatt capability for the OMEGA laser facility | |
| GB2582098A (en) | Optical manipulation of atoms or molecules | |
| US8929406B2 (en) | 193NM laser and inspection system | |
| US9991664B1 (en) | High-efficiency high-power ring laser amplifier | |
| JPH09509010A (en) | A device for minimizing laser beam depolarization due to thermally induced birefringence. | |
| US20170093111A1 (en) | High power laser with chirped pulse amplification | |
| US8373924B2 (en) | Frequency-tripled fiber MOPA | |
| US20140376085A1 (en) | Passive device and method for the coherent combination of a plurality of optical amplifiers | |
| CN103259184B (en) | Repetition frequency neodymium glass laser | |
| Ostermeyer et al. | Trends in stimulated Brillouin scattering and optical phase conjugation | |
| CN102522689A (en) | Wide spectral bandwidth ultrashort laser pulse seed source with stable carrier-envelope phase | |
| Bruesselbach et al. | Real-time atmospheric compensation by stimulated Brillouin-scattering phase conjugation | |
| US5832020A (en) | Solid-state laser forming highly-repetitive, high-energy and high-power laser beam | |
| KR100318520B1 (en) | Optical isolator using stimulated brillouin scattering phase conjugation mirror and its application to optical amplifier systems | |
| CN103296577A (en) | kHz green ray picosecond laser device used for satellite distance measurement | |
| CN108107642B (en) | Solid sum frequency sodium guide star spectrum continuous laser output device and output method | |
| CN107196182B (en) | Off-axis eight-pass laser amplifying device | |
| DE60308227T2 (en) | SELF-ADJUSTING INTERFEROMETRIC COUPLER | |
| US5535049A (en) | Phase and birefringence aberration correction | |
| Peng et al. | Four-beam tiled-aperture coherent beam combining of high-power femtosecond laser with two compressors | |
| Ageichik et al. | Use of dynamic holography technique for correction of aberrations in telescopes | |
| CN113258425A (en) | Laser amplification system and device | |
| CN213484178U (en) | Multistage laser amplification system with phase conjugate mirror | |
| CN104577682B (en) | Non- steady imaging resonator | |
| KR0155068B1 (en) | The laser amplification method and apparatus for four path amplification compensating thermal birefringence |
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 |