CN2901639Y - Laser pulse four-way amplifier - Google Patents
Laser pulse four-way amplifier Download PDFInfo
- Publication number
- CN2901639Y CN2901639Y CN 200620018245 CN200620018245U CN2901639Y CN 2901639 Y CN2901639 Y CN 2901639Y CN 200620018245 CN200620018245 CN 200620018245 CN 200620018245 U CN200620018245 U CN 200620018245U CN 2901639 Y CN2901639 Y CN 2901639Y
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- China
- Prior art keywords
- wave plate
- gain medium
- prism
- laser
- seed light
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- 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.)
- Expired - Fee Related
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- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 230000010287 polarization Effects 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims 1
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004146 energy storage Methods 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
A laser impulse four-start amplifier can be widely used to energy amplification of large signal ultra-short wave laser pulse. Making use of the laser polarization, the utility model comprises an optical Faraday rotator (3), a second polarizing prism (4), a first total reflection prism (5), a laser gain medium (6), a 1/4 wave plate (9) and a total reflection prism (10). Wherein, the 1/2 wave plate, the optical Faraday rotator, the second polarizing prism, the laser gain medium, the 1/4 wave plate and the second total reflection prism are all arranged sequentially along exit direction of the light reflected by the first polarizing prism. The first total reflection prism is arranged in the vertical direction of the second polarizing prism reflected light. The utility model can fully extract the stored energy of the laser gain medium and gain a large energy gain, thereby simplifying the technology and saving the cost.
Description
Technical field
A kind of based on the laser polarization characteristics design simple in structure, cost is low, laser pulse four-way amplifier easy to adjust, the energy that can be widely used in the large-signal ultrashort laser pulse amplifies.
Background technology
The mode-locked laser light pulse is widely used owing to its extremely narrow pulse duration, but its single pulse energy is low, needing to import regenerative amplifier amplifies, but be subject to the damage threshold of optical component in the regenerative amplifier, the single pulse energy that amplifies output light has only a few milli Jiao, still needs follow-up amplification.The follow-up amplification of present ultrashort laser pulse can adopt single-pass, bilateral and Duo Tong to amplify.Single-pass and bilateral are amplified and the energy storage of gain medium can't be extracted to greatest extent, cause unnecessary loss.Many at present logical complex structures that amplify, for example, the lens array method can realize 10 logical amplifications, but regulates difficulty, can cause beam quality to descend simultaneously.
Summary of the invention
The purpose of this utility model is the energy storage of gain medium can't be extracted to greatest extent the shortcoming of regulating difficulty with multi-pass amplifier in order to overcome existing ultrashort laser pulse single-pass or bilateral amplifier, proposes a kind of simple and practical laser pulse four-way amplifier.This apparatus structure simple and stable, cost are low, easy to adjust, and the energy storage that can fully extract gain medium finally obtains high energy gain, reach the purpose of simplifying the techniques save cost.
Laser pulse four-way amplifier of the present utility model utilizes the polarization characteristic of laser, adopts the combination of faraday's optical rotator, polarizing optics and quarter wave plate, and the seed laser four times that makes injection realizes that by gain medium four-way amplifies.The technical scheme that this device adopted is seen Fig. 1, form by first devating prism, 1,1/2 wave plate 2, faraday's optical rotator 3, second devating prism 4, first total reflective mirror 5, gain medium 6, quarter wave plate 9 and the total reflective mirror 10 that import seed light, wherein, along being provided with by the seed light exit direction of first devating prism, 1 reflection, first total reflective mirror 5 is arranged on second devating prism, 4 catoptrical vertical direction successively for 1/2 wave plate 2, faraday's optical rotator 3, second devating prism 4, gain medium 6, quarter wave plate 9, second total reflective mirror 10.
The spot size three of the clear aperture of the diameter of the gain medium in the utility model and faraday's optical rotator and injection seed light should be mated mutually.
The beneficial effects of the utility model are: (1) can extract the energy storage of gain medium fully; (2) simple in structure.
Description of drawings
Fig. 1 is a light path principle figure of the present utility model.
Among the figure, 1, first devating prism, 2,1/2 wave plate, 3, faraday's optical rotator, 4, second devating prism, 5, first total reflective mirror, 6, gain medium, 7, xenon lamp, 8, laser cavity, 9, quarter wave plate, 10, second total reflective mirror.
Embodiment
Embodiment of the present utility model is referring to Fig. 1, in Fig. 1, this device is made up of first devating prism, 1,1/2 wave plate 2, faraday's optical rotator 3, second devating prism 4, first total reflective mirror 5, gain medium 6, quarter wave plate 9 and the total reflective mirror 10 that import seed light, wherein, along being provided with by the seed light exit direction of first devating prism, 1 reflection, first total reflective mirror 5 is arranged on second devating prism, 4 catoptrical vertical direction successively for 1/2 wave plate 2, faraday's optical rotator 3, second devating prism 4, gain medium 6, quarter wave plate 9, second total reflective mirror 10.The spot size three of the clear aperture of the diameter of the gain medium in the utility model and faraday's optical rotator and injection seed light should be mated mutually, and gain medium can be selected operation materials such as Nd:YAG rod for use.The seed light direction of propagation of vertical polarization and first devating prism, 1 vertical incidence, by 1 reflection of first devating prism, through its polarization directions, 1/2 wave plate 2 back turned clockwise 45 °, behind faraday's optical rotator 3, turned clockwise again 45 °, become horizontal polarization light, seed light arrives gain medium 6 by second devating prism 4, because gain medium is in laser cavity 8, there is xenon lamp 7 that it is carried out the pumping effect, energy level is in saturation condition on the gain medium, when seed light by after energy obtain amplifying for the first time.Become circularly polarized light through quarter wave plate 9 back horizontal polarization light, total reflective mirror 10 makes seed light once more by quarter wave plate 9 its reflection afterwards, and circularly polarized light becomes orthogonal polarized light, is amplified for the second time by gain medium afterpulse energy once more.Because devating prism to the horizontal polarization transmittance, to the orthogonal polarized light reflection, reflexes to first total reflective mirror 5 so the seed light after amplifying is polarized prism 4, reverberation is polarized prism 4 again and reflects into gain medium, and seed light is amplified for the third time.Orthogonal polarized light becomes circularly polarized light during through quarter wave plate 9, becomes horizontal polarization light through quarter wave plate again through 10 reflections of second total reflective mirror, is amplified by the 4th time by seed light behind the gain medium, afterwards from 4 outgoing of second devating prism.Laser oppositely is rotated counterclockwise 45 ° by its polarization direction of Faraday rotator, and it and 1/2 wave plate are cancelled out each other to turning clockwise 45 ° of laser, and laser still is horizontal polarization light, through devating prism 1 back with regard to outgoing.
Annotate: devating prism has very high transmissivity to horizontal polarization light, and orthogonal polarized light is had very high reflectivity.
When laser polarization direction and 1/2 wave plate optical axis included angle were α, emergent light was rotated 2 α, was rotated 45 ° for making laser by 1/2 wave plate rear polarizer direction, 1/2 wave plate optical axis should with 22.5 ° of laser polarization direction angles.Faraday's optical rotator is relevant with the incident direction of light to the rotation of polarised light.During from forward entrance, it turns clockwise 45 ° with polarised light, and during from reverse incident, it is rotated counterclockwise 45 ° with polarised light.
The effect of quarter wave plate is, when the fast axle of the polarization direction of linearly polarized light and quarter wave plate was parallel or vertical, transmission was still linearly polarized light; When the fast axle of the polarization direction of linearly polarized light and quarter wave plate became 45 ° or 135 ° of angles, transmitted light was a circularly polarized light; Other direction transmitted light is an elliptically polarized light.In the utility model the fast axle institute of the polarization direction of seed light and quarter wave plate to acutangulate be 45 ° of angles.
Claims (1)
1, laser pulse four-way amplifier is characterized in that: be made up of first devating prism (1), 1/2 wave plate (2), faraday's optical rotator (3), second devating prism (4), first total reflective mirror (5), gain medium (6), quarter wave plate (9) and the total reflective mirror (10) that import seed light; Wherein, the seed light direction of propagation of vertical polarization and first devating prism (1) vertical incidence, 1/2 wave plate (2), faraday's optical rotator (3), second devating prism (4), gain medium (6), quarter wave plate (9), second total reflective mirror (10) is successively along being provided with by the seed light exit direction of first devating prism (1) reflection, 1/2 wave plate optical axis and seed light polarization direction angle are 22.5 °, the fast axle of quarter wave plate is 45 ° with the folded acute angle of seed light, first total reflective mirror (5) is arranged on the catoptrical vertical direction of second devating prism (4), and the spot size three of the diameter of gain medium (6) and the clear aperture of faraday's optical rotator and injection seed light is mated mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620018245 CN2901639Y (en) | 2006-03-23 | 2006-03-23 | Laser pulse four-way amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620018245 CN2901639Y (en) | 2006-03-23 | 2006-03-23 | Laser pulse four-way amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901639Y true CN2901639Y (en) | 2007-05-16 |
Family
ID=38085803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620018245 Expired - Fee Related CN2901639Y (en) | 2006-03-23 | 2006-03-23 | Laser pulse four-way amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901639Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103050876A (en) * | 2013-01-05 | 2013-04-17 | 中国科学院合肥物质科学研究院 | Linearly polarized laser amplifier |
| CN104348073A (en) * | 2013-08-09 | 2015-02-11 | 中国科学院物理研究所 | Tunable narrow-linewidth DUV (Deep Ultra Violet) laser |
| CN109286125A (en) * | 2018-11-16 | 2019-01-29 | 青岛自贸激光科技有限公司 | A kind of efficient chirped pulse amplification system |
| CN110190492A (en) * | 2019-04-11 | 2019-08-30 | 北京盛镭科技有限公司 | Laser amplifier |
| CN113594840A (en) * | 2021-09-30 | 2021-11-02 | 四川光天下激光科技有限公司 | Seed light optical path structure of multi-pass amplification system |
-
2006
- 2006-03-23 CN CN 200620018245 patent/CN2901639Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103050876A (en) * | 2013-01-05 | 2013-04-17 | 中国科学院合肥物质科学研究院 | Linearly polarized laser amplifier |
| CN104348073A (en) * | 2013-08-09 | 2015-02-11 | 中国科学院物理研究所 | Tunable narrow-linewidth DUV (Deep Ultra Violet) laser |
| CN109286125A (en) * | 2018-11-16 | 2019-01-29 | 青岛自贸激光科技有限公司 | A kind of efficient chirped pulse amplification system |
| CN109286125B (en) * | 2018-11-16 | 2021-03-16 | 青岛自贸激光科技有限公司 | Efficient chirped pulse amplification system |
| CN110190492A (en) * | 2019-04-11 | 2019-08-30 | 北京盛镭科技有限公司 | Laser amplifier |
| CN113594840A (en) * | 2021-09-30 | 2021-11-02 | 四川光天下激光科技有限公司 | Seed light optical path structure of multi-pass amplification system |
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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: 20070516 |