CN103050876A - Linearly polarized laser amplifier - Google Patents
Linearly polarized laser amplifier Download PDFInfo
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- CN103050876A CN103050876A CN2013100008583A CN201310000858A CN103050876A CN 103050876 A CN103050876 A CN 103050876A CN 2013100008583 A CN2013100008583 A CN 2013100008583A CN 201310000858 A CN201310000858 A CN 201310000858A CN 103050876 A CN103050876 A CN 103050876A
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- laser
- linearly polarized
- polarized laser
- amplifier
- analyzer
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Abstract
The invention discloses a linearly polarized laser amplifier. The linearly polarized laser amplifier comprises a laser rod (3) and an xenon lamp (6), wherein the laser rod (3) is coaxial with incident linearly polarized laser (1), the xenon lamp (6) is parallel with the laser rod (3), in particular, an analyzer (2) which can fully transmit the incident linearly polarized laser (1) is arranged at one end of the optical axis of the laser rod (3), and a quarter-wave plate (4) and a holophote (5) are sequentially arranged at the other end of the optical axis of the laser rod (3); and the analyzer (2) is a prism or a Brewster window. The linearly polarized laser amplifier not only amplifies the linearly polarized laser, but also increases the amplification efficiency by more than two times higher than the conventional amplification efficiency, thus greatly increasing the efficiency of single-stage amplification and solving the problem on how to amplify weak signal laser output, moreover, under the condition of adding only one quarter-wave plate and one holophote, the linearly polarized laser amplifier ensures that one stage of laser working substance can achieve the laser amplification effect which only can be achieved by two stages of laser working substances, furthermore, the photoelectric cost is reduced as well, the space of the laser amplifier is greatly reduced, the stability of a laser system can be greatly enhanced, and the linearly polarized laser amplifier can be widely used for amplifying linearly polarized laser.
Description
Technical field
The present invention relates to a kind of laser amplifier, especially a kind of line polarisation laser amplifier.
Background technology
Along with the extensive utilization of laser technology in the field such as military, industrial, medical, people also constantly have higher requirement to the performance of laser, often wish that laser has linear polarization, high light beam quality and high-energy, need powerful modulated laser, transfer the laser therapeutic apparantus of Q to need powerful pulse laser etc. such as laser radar.Yet, wish obtains to have simultaneously the linearly polarized laser of high-energy and high light beam quality, it generally is very difficult only depending on laser (concussion) device self to obtain, this is because improve simultaneously the output energy of laser and other indexs, is conflicting such as the requirement of beam divergence angle, monochromaticjty, pulsewidth, modulating performance etc.Therefore, for the high energy laser output of excellent, people often use laser amplifier; It constitutes on the optical axis of laser output working-laser material is set---and laser bar and its other xenon lamp that be arranged in parallel reach the purpose of a laser amplifier to realize the effect through optical pumping.But though that the amplifier of this structure has is simple in structure, the advantage that can amplify the output of preposition laser, it is low to exist also laser amplifier efficient, is difficult to the deficiency that the Laser output to some small-signals effectively amplifies.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of rational in infrastructure for overcoming weak point of the prior art, the line polarisation laser amplifier that amplification efficiency is high.
For solving technical problem of the present invention, the technical scheme that adopts is: line polarisation laser amplifier comprises and the coaxial laser bar of the extreme light of incident ray and parallel xenon lamp, particularly,
Analyzer, the other end that one end of described laser bar optical axis is equipped with the extreme light of total transmissivity incident ray are equipped with quarter wave plate and total reflective mirror successively.
As the further improvement of line polarisation laser amplifier, described analyzer is prism, or the Bu Shi window.
Beneficial effect with respect to prior art is, employing is on the basis of the coaxial laser bar of existing and the extreme light of incident ray and parallel xenon lamp, be equipped with again the analyzer of the extreme light of total transmissivity incident ray in an end of laser bar optical axis, the other end is equipped with the technical scheme of quarter wave plate and total reflective mirror successively, both linearly polarized laser was amplified, making again amplification efficiency is more than the twice of existing amplification efficiency, improved widely the efficient that single-stage is amplified, solved the difficult problem that small and weak signal laser output is amplified, also have only under the condition that increases a slice quarter wave plate and a slice total reflective mirror, the one-level working-laser material has been reached use the advantage of the light amplification effect that the two-stage working-laser material can obtain, and also reduced the photoelectricity cost, reduce widely the space of laser amplifier, greatly promoted the stability of laser system.
Realization mechanism of the present invention is the analyzing direction analyzer parallel with the extreme light polarization direction of incident ray to be set on the direction of propagation of the extreme light of incident ray, thereby to make the extreme light of incident ray of input can fully pass through analyzer.When the extreme light of incident ray of input passes through laser bar, laser bar is under the optical pumping effect of xenon lamp, be in the population inversion state, because the extreme light frequency of incident ray and amplification medium---the gain spectrum of laser bar coincides, so the particle on the laser bar excitation state has produced strong stimulated radiation under the effect of extraneous signal, this radiation is added on the extreme light of incident ray and makes it obtain amplification.The extreme light of incident ray after the amplification passes through quarter wave plate again through the reflection of total reflective mirror after by quarter wave plate, the extreme light of incident ray after namely being equivalent to amplify is through 1/2 wave plate, so that the extreme polarisation of light face of incident ray after amplifying has rotated 90 degree, the extreme polarisation of light perpendicular direction of incident ray when making its polarization direction with input.When it carried out the secondary amplification again by laser bar after, the extreme light of incident ray after secondary amplifies can not pass through analyzer again, can only by analyzer reflection output, be exported thereby be exaggerated the above extreme light of incident ray of twice.
As the further embodiment of beneficial effect, analyzer is preferably prism or Bu Shi window, not only makes the source of analyzer more extensive, also is convenient to install and use.
Description of drawings
Below in conjunction with accompanying drawing optimal way of the present invention is described in further detail.
Fig. 1 is a kind of basic structure schematic diagram of the present invention.
Embodiment
Referring to Fig. 1, being constructed as follows of line polarisation laser amplifier:
Be equipped with successively analyzer 2, laser bar 3, quarter wave plate 4 and total reflective mirror 5 to extreme light 1 total transmissivity of incident ray on the direction of propagation of the extreme light 1 of incident ray; Wherein, analyzer 2 is prism (or Bu Shi window), laser bar 3 and the extreme light 1 coaxial setting of incident ray, the laser bar 3 other xenon lamps in parallel 6 that are equipped with.
During use, extreme light 1 total transmissivity of incident ray is by behind the analyzer 2, successively through laser bar 3, quarter wave plate 4, total reflective mirror 5, quarter wave plate 4 and laser bar 3 by twice amplification, its polarization direction emergent ray extreme light 7 vertical with the extreme light of incident ray 1 polarization direction that has been amplified by analyzer 2 outputs at last.
Obviously, those skilled in the art can carry out various changes and modification to line polarisation laser amplifier of the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (2)
1. line polarisation laser amplifier comprises and the coaxial laser bar (3) of the extreme light of incident ray (1) and parallel xenon lamp (6), it is characterized in that:
Analyzer (2), the other end that one end of described laser bar (3) optical axis is equipped with the extreme light of total transmissivity incident ray (1) are equipped with quarter wave plate (4) and total reflective mirror (5) successively.
2. line polarisation laser amplifier according to claim 1 is characterized in that analyzer (2) is prism, or the Bu Shi window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100008583A CN103050876A (en) | 2013-01-05 | 2013-01-05 | Linearly polarized laser amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100008583A CN103050876A (en) | 2013-01-05 | 2013-01-05 | Linearly polarized laser amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103050876A true CN103050876A (en) | 2013-04-17 |
Family
ID=48063428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100008583A Pending CN103050876A (en) | 2013-01-05 | 2013-01-05 | Linearly polarized laser amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103050876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615239A (en) * | 2020-12-15 | 2021-04-06 | 武汉菩济医疗科技有限公司 | Laser magnifier and laser magnifier |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2901639Y (en) * | 2006-03-23 | 2007-05-16 | 北京工业大学 | Laser pulse four-way amplifier |
| CN101436753A (en) * | 2008-12-26 | 2009-05-20 | 北京工业大学 | Laser cavity external frequency multiplication system |
| 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
- 2013-01-05 CN CN2013100008583A patent/CN103050876A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2901639Y (en) * | 2006-03-23 | 2007-05-16 | 北京工业大学 | Laser pulse four-way amplifier |
| CN101436753A (en) * | 2008-12-26 | 2009-05-20 | 北京工业大学 | Laser cavity external frequency multiplication system |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615239A (en) * | 2020-12-15 | 2021-04-06 | 武汉菩济医疗科技有限公司 | Laser magnifier and laser magnifier |
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Application publication date: 20130417 |