CN103199431A - High-performance double-tail-end pumping single-doped Ho:YAG solid laser - Google Patents
High-performance double-tail-end pumping single-doped Ho:YAG solid laser Download PDFInfo
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- CN103199431A CN103199431A CN2013101486898A CN201310148689A CN103199431A CN 103199431 A CN103199431 A CN 103199431A CN 2013101486898 A CN2013101486898 A CN 2013101486898A CN 201310148689 A CN201310148689 A CN 201310148689A CN 103199431 A CN103199431 A CN 103199431A
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Abstract
The invention discloses a high-performance double-tail-end pumping single-doped Ho:YAG solid laser, relates to a solid laser, and aims at solving the problem that the existing single-doped Ho laser easily causes unbalanced heat distribution in the crystal so as to cause bad influence on high-power operation of the laser. The high-performance double-tail-end pumping single-doped Ho:YAG solid laser is characterized in that the pumping mode is double-tail-end pumping, both two paths of pumping lights need to penetrate through an isolating device firstly, and then are filled into the single-doped Ho:YAG crystal; the pumping lights enter respectively from a 0-degree 2mum total reflection mirror and a 45-degree 2mum total reflection mirror; a resonance cavity of the laser is arranged by a first total reflection mirror, a second total reflection mirror and a 2mum output coupling mirror according to an L-shaped structure; and the 2mum output coupling mirror obtains 2mum single-wavelength laser for outputting by tuning the angle of an F-P (Fabry-Perot) etalon. The high-performance double-tail-end pumping single-doped Ho:YAG solid laser is used for obtaining 2mum single-wavelength laser.
Description
Technical field
The present invention relates to a kind of solid state laser, particularly the Ho:YAG solid state laser is singly mixed in a kind of high performance two terminal pumpings.
Background technology
The laser of 2 mu m wavebands is widely used, and relates to aspects such as military affairs, infrared remote sensing, medical treatment and optical communication, especially can realize the laser output of mid and far infrared 3～12 μ m under the non-linear conversion effect.Using 1.9 microns laser is the best-of-breed technology approach that obtains 2 μ m laser under the normal temperature condition as the Ho solid state laser of singly mixing of pumping source.At present, singly mix the Ho laser and adopt single terminal pump mode substantially, this has reduced laser crystal to the uniformity that pump light absorbs, and causes the imbalance of crystals heat distribution, brings harmful effect for the high power running of laser.
Summary of the invention
The objective of the invention is in order to solve the present imbalance that the Ho laser easily causes the crystals heat distribution of singly mixing, bring dysgenic problem for the high power running of laser, the invention provides a kind of high performance two terminal pumpings and singly mix the Ho:YAG solid state laser.
The Ho:YAG solid state laser is singly mixed in high performance two terminal pumpings of the present invention, and it comprises first total reflective mirror, singly mixes Ho:YAG crystal, second total reflective mirror, F-P etalon, 2 μ m output coupling mirrors, first spacer assembly, second spacer assembly, first pump laser and second pump laser;
1.9 μ m pump lights of first pump laser emission are incident to first spacer assembly, pump light through the first spacer assembly transmission is incident to first total reflective mirror, be incident to through the pump light of the first total reflective mirror transmission and singly mix the Ho:YAG crystal, after absorbing, the Ho:YAG crystal produces 2 μ m laser through singly mixing, described 2 μ m laser are incident to second total reflective mirror
1.9 μ m pump lights of second pump laser emission are incident to second spacer assembly, pump light through the second spacer assembly transmission is incident to second total reflective mirror, be incident to through the pump light of the second total reflective mirror transmission and singly mix the Ho:YAG crystal, after absorbing, the Ho:YAG crystal produces 2 μ m laser through singly mixing, described 2 μ m laser are incident to first total reflective mirror, be incident to through 2 μ m laser of the first total reflective mirror total reflection and singly mix the Ho:YAG crystal, 2 μ m laser through singly mixing the transmission of Ho:YAG crystal are incident to second total reflective mirror
2 μ m laser through the second total reflective mirror total reflection are incident to the F-P etalon, and the light that sees through through the F-P etalon is incident to 2 μ m output coupling mirrors, and the light of exporting continuously through 2 μ m output coupling mirrors is the single wavelength lasers of 2 μ m.
It also comprises adjusting Q crystal, and described adjusting Q crystal is connected in the light path of F-P etalon and 2 μ m output coupling mirrors.
The invention has the advantages that the present invention is a kind of high-power high-efficiency 2 μ m solid state lasers, can realize continuously and two kinds of way of outputs of pulse that the present invention selects for use and singly mixes the Ho:YAG crystal as gain medium.The Ho:YAG crystal has strong absorption at 1.9 mu m wavebands, inject pump light with two terminal pump modes simultaneously, use singly to mix and singly mix the Ho:YAG crystal pump light is absorbed comparatively uniformly, thus balance the heat distribution of crystals, be conducive to realize high-power 2 μ m laser output.The present invention can significantly promote the output performance of singly mixing the Ho:YAG solid state laser, and has the characteristics of compact conformation and good stability.
Description of drawings
The principle schematic that Fig. 1 singly mixes the Ho:YAG solid state laser for high performance two terminal pumpings of the present invention.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, the Ho:YAG solid state laser is singly mixed in the described high performance two terminal pumpings of present embodiment, and it comprises first total reflective mirror 1, singly mixes Ho:YAG crystal 2, second total reflective mirror 3, F-P etalon 4,2 μ m output coupling mirrors 6, first spacer assembly 7, second spacer assembly 8, first pump laser 9 and second pump laser 10;
1.9 μ m pump lights of first pump laser, 9 emissions are incident to first spacer assembly 7, pump light through 7 transmissions of first spacer assembly is incident to first total reflective mirror 1, be incident to through the pump light of first total reflective mirror, 1 transmission and singly mix the Ho:YAG crystal 2, after absorbing, the Ho:YAG crystal 2 produces 2 μ m laser through singly mixing, described 2 μ m laser are incident to second total reflective mirror 3
1.9 μ m pump lights of the second pump laser 10 emissions are incident to the second spacer assembly 8, pump light through the second spacer assembly 8 transmissions is incident to the second total reflective mirror 3, be incident to and singly mix Ho:YAG crystal 2 through the pump light of the second total reflective mirror 3 transmissions, produce 2 μ m laser through singly mixing after Ho:YAG crystal 2 absorbs, described 2 μ m laser are incident to the first total reflective mirror 1, be incident to and singly mix Ho:YAG crystal 2 through 2 μ m laser of the first total reflective mirror 1 total reflection, 2 μ m laser through singly mixing 2 transmissions of Ho:YAG crystal are incident to the second total reflective mirror 3
2 μ m laser through 3 total reflections of second total reflective mirror are incident to F-P etalon 4, and the light that sees through through F-P etalon 4 is incident to 2 μ m output coupling mirrors 6, and the light of exporting continuously through 2 μ m output coupling mirrors 6 is the single wavelength lasers of 2 μ m.
Embodiment two: present embodiment is the further restriction that the Ho:YAG solid state laser is singly mixed in one described high performance two terminal pumpings to embodiment,
It also comprises adjusting Q crystal 5, and described adjusting Q crystal 5 is connected in the light path of F-P etalon 4 and 2 μ m output coupling mirrors 6.
Pump mode is two terminal pumpings, and the two-way pump light is all wanted to reinject by a spacer assembly earlier singly to mix the Ho:YAG crystal 2.Pump light is respectively from 0 ° of 2 μ m total reflective mirror and the incident of 45 ° of 2 μ m total reflective mirror.Laser resonant cavity is placed by " L " type structure by first total reflective mirror 1, second total reflective mirror 3 and 2 μ m output coupling mirrors 6, and each pumping light path is inserted a spacer assembly.Angle by tuning F-P etalon 4 obtains the single wavelength laser output of 2 μ m.
In the present embodiment, when adjusting Q crystal 5 work, described high performance two terminal pumpings are singly mixed the Ho:YAG solid state laser with the laser of output impulse form.When adjusting Q crystal 5 was not worked, adjusting Q crystal 5 was equivalent to common crystal, cut little ice, and at this moment, Ho:YAG solid state laser output continuous wave laser is singly mixed in described high performance two terminal pumpings.
Embodiment three: present embodiment is to embodiment one or the two described high performance pair of further restrictions that the Ho:YAG solid state laser is singly mixed in terminal pumpings,
Described first total reflective mirror 1 is 0 ° 2 μ m total reflective mirrors for critical angle,
2 μ m laser vertical through singly mixing the transmission of Ho:YAG crystal 2 are incident to first total reflective mirror 1.
Embodiment four: present embodiment is the further restriction that the Ho:YAG solid state laser is singly mixed in three described high performance two terminal pumpings to embodiment,
Described second total reflective mirror 3 is 45 ° 2 μ m total reflective mirrors for critical angle,
The incidence angle that described 2 μ m laser are incident to second total reflective mirror 3 equals 45 °.
Embodiment five: present embodiment is to embodiment one or the two described high performance pair of further restrictions that the Ho:YAG solid state laser is singly mixed in terminal pumpings,
It is the Tm:YLF solid state laser of 1908nm that described first pump laser 9 and second pump laser 10 all adopt emission wavelength.
Select for use and singly mix the Ho:YAG crystal 2 as gain medium.Singly mixing the Ho:YAG crystal has strong absorption at 1.9 mu m wavebands, and this is corresponding with the strong emission peak of singly mixing the Tm crystal, so present embodiment selects for use the Tm:YLF solid state laser as the pumping source of singly mixing the Ho:YAG laser.
Embodiment six: present embodiment is to embodiment one or the two described high performance pair of further restrictions that the Ho:YAG solid state laser is singly mixed in terminal pumpings, singly mixing the Ho:YAG crystal 2 is 60mm along the length of the direction of light incident, and singly mixes Ho in the Ho:YAG crystal 2
3+Doping content is 0.8at.%.
Adopt the structure of the respective embodiments described above combination, when injecting the pumping laser 160W of 1908nm to Ho:YAG laser of the present invention, obtained the output of 90W stable continuous ripple 2.09 μ m laser.Obtaining average power when transferring the Q repetition rate for 30kHz is the pulse laser output of 82W.
In the specific implementation, 2 μ m output coupling mirrors 6 of Ho:YAG solid state laser of the present invention are the plano-concave mirror, and its radius of curvature is-300mm, are 50% to the transmitance of 2 μ m.
The present invention is a kind of high-power high-efficiency 2 μ m solid state lasers, can realize continuously and two kinds of way of outputs of pulse.Inject pump lights with two terminal pump modes, use singly to mix and singly mix the Ho:YAG crystal pump light is absorbed comparatively uniformly, thus balance the heat distribution of crystals, be conducive to realize high-power 2 μ m laser output.
Claims (6)
1. the Ho:YAG solid state laser is singly mixed in high performance two terminal pumping, it is characterized in that it comprises first total reflective mirror (1), singly mixes Ho:YAG crystal (2), second total reflective mirror (3), F-P etalon (4), 2 μ m output coupling mirrors (6), first spacer assembly (7), second spacer assembly (8), first pump laser (9) and second pump laser (10);
1.9 μ m pump lights of first pump laser (9) emission are incident to first spacer assembly (7), pump light through first spacer assembly (7) transmission is incident to first total reflective mirror (1), be incident to through the pump light of first total reflective mirror (1) transmission and singly mix Ho:YAG crystal (2), after absorbing, Ho:YAG crystal (2) produces 2 μ m laser through singly mixing, described 2 μ m laser are incident to second total reflective mirror (3)
1.9 μ m pump lights of second pump laser (10) emission are incident to second spacer assembly (8), pump light through second spacer assembly (8) transmission is incident to second total reflective mirror (3), be incident to through the pump light of second total reflective mirror (3) transmission and singly mix Ho:YAG crystal (2), after absorbing, Ho:YAG crystal (2) produces 2 μ m laser through singly mixing, described 2 μ m laser are incident to first total reflective mirror (1), be incident to through 2 μ m laser of first total reflective mirror (1) total reflection and singly mix Ho:YAG crystal (2), 2 μ m laser through singly mixing Ho:YAG crystal (2) transmission are incident to second total reflective mirror (3)
2 μ m laser through second total reflective mirror (3) total reflection are incident to F-P etalon (4), and the light that sees through through F-P etalon (4) is incident to 2 μ m output coupling mirrors (6), and the light of exporting continuously through 2 μ m output coupling mirrors (6) is the single wavelength lasers of 2 μ m.
2. the Ho:YAG solid state laser is singly mixed in high performance two terminal pumpings according to claim 1 and 2, it is characterized in that it also comprises adjusting Q crystal (5), and described adjusting Q crystal (5) is connected in the light path of F-P etalon (4) and 2 μ m output coupling mirrors (6).
3. the Ho:YAG solid state laser is singly mixed in high performance two terminal pumpings according to claim 1 and 2, it is characterized in that, described first total reflective mirror (1) is 0 ° 2 μ m total reflective mirrors for critical angle,
2 μ m laser vertical through singly mixing Ho:YAG crystal (2) transmission are incident to first total reflective mirror (1).
4. the Ho:YAG solid state laser is singly mixed in high performance two terminal pumpings according to claim 3, it is characterized in that, described second total reflective mirror (3) is 45 ° 2 μ m total reflective mirrors for critical angle,
The incidence angle that described 2 μ m laser are incident to second total reflective mirror (3) equals 45 °.
5. the Ho:YAG solid state laser is singly mixed in high performance two terminal pumpings according to claim 1 and 2, it is characterized in that it is the Tm:YLF solid state laser of 1908nm that described first pump laser (9) and second pump laser (10) all adopt emission wavelength.
6. the Ho:YAG solid state laser is singly mixed in high performance two terminal pumpings according to claim 1 and 2, it is characterized in that, singly mixing Ho:YAG crystal (2) is 60mm along the length of the direction of light incident, and singly mixes Ho in the Ho:YAG crystal (2)
3+Doping content is 0.8at.%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409957A (en) * | 2014-11-07 | 2015-03-11 | 中国船舶重工集团公司第七一七研究所 | Narrow-linewidth 2-micron laser device |
| CN104577686A (en) * | 2015-01-04 | 2015-04-29 | 中国科学院上海光学精密机械研究所 | Fiber laser double-end pumping Ho3+laser crystal 1.19 micrometer waveband laser device |
| CN105633789A (en) * | 2016-04-12 | 2016-06-01 | 哈尔滨工业大学 | CdSe optical parametric oscillator-based far infrared laser generator |
| CN105896259A (en) * | 2014-12-03 | 2016-08-24 | 杜金波 | Q-switch Nd:YAG laser pulse width narrowing technology |
| CN107645119A (en) * | 2017-10-18 | 2018-01-30 | 哈尔滨工业大学 | A kind of method of computer control laser output wavelength |
| CN107946889A (en) * | 2017-11-23 | 2018-04-20 | 黑龙江工程学院 | A kind of multiple Pulse Compression solid laser system |
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| CN101420099A (en) * | 2008-11-28 | 2009-04-29 | 华南理工大学 | Germanate glass optical fiber laser with laser wavelength within 1.7-2.1 mu m |
| CN102916333A (en) * | 2012-10-26 | 2013-02-06 | 哈尔滨工业大学 | Double-end pumped solid laser system on basis of polarization isolation |
| CN103001113A (en) * | 2012-12-27 | 2013-03-27 | 中国科学院上海光学精密机械研究所 | 473nm electro-optic q-switch laser |
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| JPH01214079A (en) * | 1988-02-22 | 1989-08-28 | Sony Corp | Laser light source |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409957A (en) * | 2014-11-07 | 2015-03-11 | 中国船舶重工集团公司第七一七研究所 | Narrow-linewidth 2-micron laser device |
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| CN105896259B (en) * | 2014-12-03 | 2019-07-02 | 杜金波 | Q-switch Nd:YAG laser pulse width narrows technology |
| CN104577686A (en) * | 2015-01-04 | 2015-04-29 | 中国科学院上海光学精密机械研究所 | Fiber laser double-end pumping Ho3+laser crystal 1.19 micrometer waveband laser device |
| CN104577686B (en) * | 2015-01-04 | 2017-10-20 | 中国科学院上海光学精密机械研究所 | Optical-fiber laser both-end pumping Ho3+The mu m waveband laser device of laser crystal 1.19 |
| CN105633789A (en) * | 2016-04-12 | 2016-06-01 | 哈尔滨工业大学 | CdSe optical parametric oscillator-based far infrared laser generator |
| CN107645119A (en) * | 2017-10-18 | 2018-01-30 | 哈尔滨工业大学 | A kind of method of computer control laser output wavelength |
| CN107946889A (en) * | 2017-11-23 | 2018-04-20 | 黑龙江工程学院 | A kind of multiple Pulse Compression solid laser system |
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Application publication date: 20130710 |