CN101859978B - End-pumped solid laser - Google Patents
End-pumped solid laser Download PDFInfo
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- CN101859978B CN101859978B CN201010201979A CN201010201979A CN101859978B CN 101859978 B CN101859978 B CN 101859978B CN 201010201979 A CN201010201979 A CN 201010201979A CN 201010201979 A CN201010201979 A CN 201010201979A CN 101859978 B CN101859978 B CN 101859978B
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Abstract
The invention relates to a laser, in particular to an end-pumped solid laser with high stability. A resonant cavity of the end-pumped solid laser mainly comprises a totally reflecting mirror, a plane output coupling mirror and a micro-adjustment mirror bracket thereof. The end-pumped solid laser is characterized in that the micro-adjustment mirror bracket comprises a mirror frame, a mirror holder and an adjusting screw, wherein the mirror frame comprises a flange and a lens mounting seat with spherical appearance, and a mirror frame mounting hole which is matched with the mirror frame is arranged on the mirror holder; the mirror frame mounting hole comprises a first mounting hole matched with the flange and a second mounting hole matched with a lens mounting seat, wherein the first mounting hole is in clearance fit with the flange, the second mounting hole is a conical hole, and the second mounting hole and the appearance sphere of the lens mounting seat form linear-planar fit connection; and the adjusting screw passes through a through hole in the mirror holder, is in threaded connection with the flange and articulated with the front end of the through hole in the mirror seat. The invention aims at designing the end-pumped solid laser with high power stability. Compared with the prior art, the invention has the advantages of large lens adjustment angle, convenient adjustment, good heat dissipation effect of the mirror bracket, stable power, and the like.
Description
Technical field
The present invention relates to a kind of laser, especially a kind of end-face pump solid laser of high stable.
Background technology
At present; End-face pump solid laser comprises pumping source, resonant cavity, gain media, and wherein, resonant cavity mainly is made up of plane total reflective mirror, plane output coupling mirror and fine adjustment lens bracket thereof; Because little, the compact conformation of end-face pump solid laser volume; Therefore most of end-face pump solid laser generally adopts spring to add screw-rod structure on mirror holder to the adjusting of each eyeglass in the laser to finely tune, this adjustment mirror holder comprise " L " type inching frame, picture frame, about adjust screw, screw and some back-moving springs are adjusted in pitching, the corner and the picture frame of " L " type inching frame are hinged; About the adjustment screw be threaded with horizontal adjustment support in " L " type inching frame; About adjustment screw tail end withstand on the picture frame, pitching adjustment screw is threaded with vertical adjustment support in " L " type inching frame, pitching is adjusted the screw tail end and is also withstood on the picture frame; Back-moving spring is located between " L " type inching frame and the picture frame, and eyeglass is installed in the picture frame.The mirror holder volume of this structure is little, easy to adjust, yet in industrial products, because environment for use is poor; The temperature difference is also bigger, and mirror holder can not directly be fixed in the light path again, and need be fixed on earlier on the fishplate bar; Just can be fixed on the light path pedestal then; Thereby the influence of being expanded with heat and contract with cold is more obvious, thereby can change the deformation quantity of back-moving spring, makes the laser resonance cavity mistuning.
In the end-face pump solid laser of folded form structure; Its overall structure is comparatively compact, but its optical element is comparatively complicated, the imbalance less stable; When in the laser of this cavity resonator structure, using spring to add the inching frame of screw-rod structure; Can make laser unstable more, influence the stability of laser output power, not even bright dipping when serious.
The end-face pump solid laser of the average cavity configuration of ordinary straight line style; Structure is comparatively simple and practical; Good beam quality, but therefore because pump light can not be absorbed by working-laser material fully, unabsorbed pump light will the directive output coupling mirror; Thermal deformation takes place to output coupling mirror in the irradiation of absorptive pumping light owing to receiving not, makes the laser imbalance influence the stability of laser.Simultaneously, the generation deformation of also being heated of outgoing mirror mirror holder makes the laser resonance cavity mistuning.
Summary of the invention
The objective of the invention is to design the high end-face pump solid laser of a kind of power stability.
In order to achieve the above object; The present invention adopts following technical solution: a kind of end-face pump solid laser, and it comprises pumping source, gain media resonant cavity, and resonant cavity mainly is made up of total reflective mirror, plane output coupling mirror and fine adjustment lens bracket thereof; Gain media is located on the light path between plane output coupling mirror and the total reflective mirror; It is characterized in that said fine adjustment lens bracket comprises picture frame, microscope base and adjustment screw, described picture frame is that the lens mounting stand of sphere constitutes by flange and profile, and microscope base is provided with the picture frame installing hole that matches with picture frame; Described picture frame installing hole comprises first installing hole that matches with flange and second installing hole that matches with lens mounting stand; First installing hole and flange matched in clearance, second installing hole are a taper hole, and the profile sphere of second installing hole and lens mounting stand constitutes the line face and is connected; The through hole that the adjustment screw passes in the microscope base is threaded with flange, and the through hole front end in adjustment screw and the microscope base is hinged.
Through hole front end in described adjustment screw and the microscope base is hinged and is made up of the taper counterbore and the ball pad that are located at the through hole front end, and the adjustment screw is connected through the line face between ball pad and the taper counterbore, makes the fine-tuning rotation of adjustment screw.
Described adjustment screw is located on four the adjustment points in flange upper and lower, left and right.
Described picture frame also comprises eyeglass installing hole, gasket ring and binding ring; Binding ring is connected with the flange thread in inner cavity; The eyeglass installing hole is used to settle eyeglass, and eyeglass one side abuts against on the seam of installing hole, and the eyeglass opposite side is fixed eyeglass through gasket ring by binding ring.
On the light path between described gain media and the plane output coupling mirror, be provided with diaphragm.
The aperture of the light hole in the said diaphragm is 1.5mm.
Because fine adjustment lens bracket also is a fixation procedure simultaneously in the process of fine setting, so it is not affected by thermal expansion and contraction, and has improved the stability of eyeglass installation site greatly, thereby can effectively improve the stability of laser.In resonant cavity, increase simultaneously diaphragm; It can not only let oscillation light fully through and also can effectively stop unabsorbed pump light directive output coupling mirror; Avoided output coupling mirror to receive the irradiation of absorptive pumping light not and thermal deformation has taken place, thereby made laser more stable.
Description of drawings
Fig. 1 is a present embodiment end-face pump solid laser structural principle sketch map.
Fig. 2 partly cuts open perspective view for fine adjustment lens bracket in the present embodiment.
Fig. 3 is the assembled view of picture frame modular construction in the present embodiment.
Fig. 4 is the assembled view of microscope base modular construction in the present embodiment.
Fig. 5 is a diaphragm parts perspective view in the present embodiment.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
As shown in Figure 1; Present embodiment comprises pumping source 16, gain media 18, resonant cavity and diaphragm 20; Described resonant cavity mainly is made up of total reflective mirror 17, plane output coupling mirror 19 and fine adjustment lens bracket thereof; Described gain media 18 is located on the light path between plane output coupling mirror 19 and the total reflective mirror 17, and described diaphragm 20 is located on the light path between described gain media 18 and the plane output coupling mirror 19, and the aperture of the light hole 21 in the said diaphragm 20 is 1.5mm (as shown in Figure 5).
Though the light light conversion efficiency is higher in the end-pumped laser; But have the unabsorbed pump light of part all the time and pass gain media 18, in the laser that does not add diaphragm 20, unabsorbed pump light will have part light directive output coupling mirror 19; When big and laser stream time is longer when the power of pumping; Thermal deformation takes place owing to having absorbed pump light in output coupling mirror 19, thereby changes the power output of laser, influences the stability of laser; On the light path between gain media 18 and the output coupling mirror 19, add the diaphragm 20 of suitable clear aperature; Because the laser beam of vibration is very little; Diameter has only about 1mm, and pump light is after gain media 18 outgoing, and hot spot is also serious than Vernonia parishii Hook; Regulate diaphragm 20 and don't influence laser generation for convenient; We adopt the diaphragm of 1.5mm clear aperature, and this can stop effectively that unabsorbed pump light directive outgoing mirror 19 is unlikely to influence the vibration of laser again, thereby can reach the stability that improves laser.
As shown in Figure 2; Described fine adjustment lens bracket comprises picture frame, microscope base 1 and adjustment screw 4, and is as shown in Figure 4, and described picture frame is that the lens mounting stand 3 of sphere constitutes by flange 6 and profile; As shown in Figure 2 again; Described picture frame also comprises eyeglass installing hole 14, gasket ring 8 and binding ring 7, and binding ring 7 is connected with flange 6 thread in inner cavity, and eyeglass installing hole 14 is used to settle eyeglass 2; Eyeglass 2 one sides abut against on the seam of eyeglass installing hole 14, and eyeglass 2 opposite sides are fixed eyeglass 2 through gasket ring 8 by binding ring 7.
As shown in Figure 3; Microscope base 1 is provided with the picture frame installing hole that matches with picture frame; Second installing hole, 10, the first installing holes 9 and flange 6 matched in clearance that described picture frame installing hole comprises first installing hole 9 that matches with flange and matches with lens mounting stand 3, second installing hole 10 is a taper hole; Second installing hole 10 is connected with the profile sphere formation line face of lens mounting stand 3; Make the fine-tuning rotation of coupling mirror picture frame, the through hole 11 that adjustment screw 4 passes in the microscope base is threaded with screwed hole 15 on the flange, and through hole 11 front ends in adjustment screw 4 and the microscope base are hinged.
Fig. 3, shown in Figure 2 for another example; Through hole 11 front ends in described adjustment screw 4 and the microscope base are hinged and are made up of taper counterbore that is located at the through hole front end 12 and ball pad 5; As shown in Figure 2; Adjustment screw 4 is connected through the line face between ball pad 5 and the taper counterbore 12, makes the 4 fine-tuning rotations of adjustment screw.
As shown in Figure 4, described adjustment screw 4 is located on four the adjustment points 13 in flange upper and lower, left and right.
Present embodiment adjustment mirror holder is regulated when using, and is divided into coarse adjustment and fine tuning two parts.
Coarse adjustment is to be fixed the eyeglass picture frame of packing into by gasket ring and binding ring; Picture frame is connected on the microscope base 1 by upper and lower, left and right four adjustment screw 4; Slowly screw four when adjusting screw; Keep picture frame plane and microscope base front-back to parallel, so that in the fine tuning process, reduce regulated quantity as far as possible.After coarse adjustment mixes up, microscope base is fixed in the light path, the microscope base fixing hole is an oblong; Can slide so that satisfy the needs of front and back inching front and back; After microscope base fixes, carefully regulate four adjustment in upper and lower, left and right screw, can reach the purpose of regulating the eyeglass pitching and the left and right sides amplitude of oscillation.
When going up the adjustment screw when screwing, the angle of depression that can increase eyeglass; When screwing down the adjustment screw, the elevation angle that can increase eyeglass; When screwing left side adjustment screw, make the eyeglass pendulum of turning left; When screwing right adjustment screw, make the eyeglass pendulum of turning right; Adjust the demand that screws can satisfy adjusting through regulating four, in the adjustment screw was screwed the process of regulating, picture frame also progressively firmly was fixed on the microscope base, therefore, also is fixation process in the time of adjustment process simultaneously.
In sum, the present invention compared with prior art has the following advantages:
1, the eyeglass adjusting angle is big.Because picture frame all is that the line face cooperates connection with microscope base respectively with the adjustment screw, can reach the adjusting of wide-angle.
2, eyeglass is easy to adjust.The adjustment screw is uniformly distributed in around the picture frame; Unaffected when regulating the screw of one of them direction to the another one direction; Adjustment process is fixation procedure; After mixing up, also needed to transfer in addition lock-screw and adjust mirror holder in the past, and when screwing lock-screw, be easy to destroy the structure that mixed up originally, thereby adjustment is brought inconvenience.
3, mirror holder good heat dissipation effect.Because picture frame cooperates connection with microscope base line face, contact-making surface is big, has improved radiating effect.
4, eyeglass stable installation property is good.Owing to adopt the fixing mode of screw adjusted, ensured the stable of mirror holder.
5, laser power stability is high.Because the eyeglass installation site is stable, is expanded with heat and contract with cold and that deformation takes place is very little, thereby can effectively be improved the stability of laser output power.In resonant cavity, increase simultaneously diaphragm; It can not only let oscillation light fully through and also can effectively stop unabsorbed pump light directive output coupling mirror; Avoided output coupling mirror to receive the irradiation of absorptive pumping light not and thermal deformation has taken place, thereby made laser more stable.
Claims (2)
1. end-face pump solid laser; It comprises pumping source (16), gain media (18) resonant cavity; Resonant cavity mainly is made up of total reflective mirror (17), plane output coupling mirror (19) and fine adjustment lens bracket thereof; Gain media (18) is located on the light path between plane output coupling mirror (19) and the total reflective mirror (17), it is characterized in that described fine adjustment lens bracket comprises picture frame, microscope base (1) and adjustment screw (4), and described picture frame is lens mounting stand (3) formation of sphere by flange (6) and profile; Microscope base (1) is provided with the picture frame installing hole that matches with picture frame; Described picture frame installing hole comprises first installing hole (9) that matches with flange and second installing hole (10) that matches with lens mounting stand (3), first installing hole (9) and flange (6) matched in clearance, and second installing hole (10) is a taper hole; Second installing hole (10) is connected with the profile sphere formation line face of lens mounting stand; The through hole (11) that adjustment screw (4) passes in the microscope base is threaded with flange, and through hole (11) front end in adjustment screw (4) and the microscope base is hinged, and is said hinged by taper counterbore (12) that is located at the through hole front end and ball pad (5) formation; Adjustment screw (4) is connected through the line face between ball pad (5) and the taper counterbore (12); Make the fine-tuning rotation of adjustment screw (4), on the light path between described gain media (18) and the plane output coupling mirror (19), be provided with diaphragm (20), the aperture of the light hole (21) in the said diaphragm (20) is 1.5mm.
2. end-face pump solid laser according to claim 1 is characterized in that described adjustment screw (4) is located on flange upper and lower, left and right four adjustment points (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010201979A CN101859978B (en) | 2010-06-12 | 2010-06-12 | End-pumped solid laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010201979A CN101859978B (en) | 2010-06-12 | 2010-06-12 | End-pumped solid laser |
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| CN101859978A CN101859978A (en) | 2010-10-13 |
| CN101859978B true CN101859978B (en) | 2012-10-17 |
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| CN201010201979A Active CN101859978B (en) | 2010-06-12 | 2010-06-12 | End-pumped solid laser |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106785826A (en) * | 2017-01-10 | 2017-05-31 | 中国科学院半导体研究所 | Laser beam quality control device and apply its laserresonator and solid state laser |
| CN107247302A (en) * | 2017-07-18 | 2017-10-13 | 伯纳激光科技有限公司 | The horizontal film stabilising arrangement of automatic laser |
| CN108258570A (en) * | 2018-03-15 | 2018-07-06 | 中国科学技术大学 | A kind of crystal water-cooling structure device |
| CN108346962B (en) * | 2018-05-15 | 2023-10-31 | 中国科学院合肥物质科学研究院 | Laser optical lens adjusting bracket |
| CN115877543B (en) * | 2023-02-08 | 2023-06-20 | 中国科学院长春光学精密机械与物理研究所 | Optical cavity mirror installation adjusting mechanism and installation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201766285U (en) * | 2010-06-12 | 2011-03-16 | 浙江嘉泰激光科技有限公司 | Transverse-pumped solid laser |
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| JP4294806B2 (en) * | 1999-08-23 | 2009-07-15 | 株式会社Ｉｈｉ | Optical element angle adjustment device for optical equipment |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201766285U (en) * | 2010-06-12 | 2011-03-16 | 浙江嘉泰激光科技有限公司 | Transverse-pumped solid laser |
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| JP特开2001-59928A 2001.03.06 |
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Address after: 325000 No. fourteen, No. 466 Binhai Road, Wenzhou economic and Technological Development Zone, Zhejiang, China Patentee after: ZHEJIANG JIATAI LASER TECHNOLOGY CO., LTD. Address before: Jiao Feng Road Lucheng District of Wenzhou City, Zhejiang Province, No. 108 325000 Patentee before: ZHEJIANG JIATAI LASER SCIENCE & TECHNOLOGY CO., LTD. |
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Denomination of invention: Heat radiating method of crystal bar of pumping solid laser at end surface of laser diode Effective date of registration: 20200325 Granted publication date: 20121017 Pledgee: China Minsheng Banking Corp Wenzhou branch Pledgor: ZHEJIANG JIATAI LASER TECHNOLOGY Co.,Ltd. Registration number: Y2020330000121 |
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