CN200979961Y - An integrated solid laser with passively adjusting Q - Google Patents
An integrated solid laser with passively adjusting Q Download PDFInfo
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- CN200979961Y CN200979961Y CN 200620119287 CN200620119287U CN200979961Y CN 200979961 Y CN200979961 Y CN 200979961Y CN 200620119287 CN200620119287 CN 200620119287 CN 200620119287 U CN200620119287 U CN 200620119287U CN 200979961 Y CN200979961 Y CN 200979961Y
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Abstract
The utility model discloses an integrated solid laser that can prevent mismatching and adjust Q passively, comprising a laser crystal (3), which is characterized in that one end of the laser crystal (3) is a right-angle cone (4), with cone angle at 90 degrees, the other end of the laser crystal (3) links a crystal (2) that adjusts Q passively by linking technology, the front of the other end of which is provided with an opposite output lens (5) positioned at one end of the crystal (2) that adjusts Q passively with the same optical axis for outputting laser. The utility model can overcome the mismatching problem, without adjusting light path, but with easy assembly, high-quality beam, stability and reliability.
Description
Technical field
The utility model relates to a kind of solid state laser, particularly a kind of preventing mismatching passive regulating Q integrated solid laser.
Background technology
In many laser applications, not only require laser to have beam quality preferably, and require laser that stronger preventing mismatching ability is arranged, and, wish that also the design of laser itself has advantages such as easy to assembly, that debugging is simple in order to satisfy large batch of production requirement.
In order to make laser have beam quality preferably, stronger preventing mismatching ability is arranged, the method that prior art extensively adopts is to adopt the back reflection chamber mirror of prism of corner cube as resonant cavity.Fig. 1 represents the schematic diagram of prism of corner cube as back reflection chamber mirror, and ideally, 3 interior reflective surfaces of prism of corner cube are orthogonal among the figure, and the incident ray in effective incidence angle can strictly reflect back by the rightabout that is parallel to incident ray.The reflection ray of prism of corner cube and incident ray have certain translation on the position, both are about center, the summit symmetry of prism.Φ represents the logical light diameter of prism of corner cube among the figure, and h represents the height of prism of corner cube, and just the summit is to the vertical range of logical light bottom surface.For above-mentioned prior art, can in following document, see: document 1: " characteristics of cube-corner prism laser resonator, the light laser and the particle beams, the 16th the 8th phase of volume, in August, 2004 "; Document 2: " Cornercube prism Resonator with polarized output:New configuration, SPIE Vol.5708 (SPIE, Bellingham, WA, 2005) ".
Though prism of corner cube has advantages such as the preventing mismatching ability is strong, easy to assembly, debugging is simple as back reflection chamber mirror, but because it has three right angle ribs, can cause the outgoing hot spot to be divided into six lobes of obvious symmetry as the Effect of Back-Cavity Mirror reflex time, and also cause out the reduction of light energy owing to the hard-edge diffraction loss of right angle rib.And, also quite high to the requirement on machining accuracy of prism of corner cube, generally require its angle of reflection precision will be in 3 seconds, these all make its application be very restricted.
The deficiencies in the prior art just need a kind of improved preventing mismatching passive regulating Q integrated solid laser.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, the passive Q-regulaitng laser that provide a kind of preventing mismatching, exempt to debug, do not have hard-edge diffraction loss, light extraction efficiency is high.
In order to achieve the above object, the technical scheme taked of the utility model comprises:
A kind of passive regulating Q integrated solid laser, as shown in Figure 3, comprise laser crystal 3, it is characterized in that an end of this laser crystal 3 is a right angle circular cone 4, the cone angle of this right angle circular cone 4 is 90 °, the other end of described laser crystal 3 is by passive Q-adjusted crystal 2 on the bonding techniques bonding, in the place ahead, other end of passive Q-adjusted crystal 2 one outgoing mirror 5 is set relatively, these outgoing mirror 5 common optical axis are placed on an end of passive Q-adjusted crystal 2, are used to export laser.Described laser crystal (3) is cylindrical.
In technique scheme, the summit of described right angle circular cone is on the axis of described laser crystal 3.
In the technique scheme, the side surface of described right angle circular cone 4 is a polished surface, and hair side is processed in the side of described laser crystal 3.
In technique scheme, on the end face of described outgoing mirror 5, be coated with one deck anti-reflection film at passive Q-adjusted crystal 2.
In technique scheme, described outgoing mirror 5 is removed, plating one deck partial reflection film 1 this outgoing mirror 5 of replacement on the end face of described outgoing mirror 5 at passive Q-adjusted crystal 2 is used to export laser.
In technique scheme, level crossing that described outgoing mirror 5 is the part transmission or concavees lens or convex lens can.
Compared with prior art, the utlity model has following beneficial effect:
1) laser of the present utility model has overcome the off resonance problem.
2) because right angle circular cone and laser crystal bar itself that partial reflection film 1 directly is plated in the outer face of passive Q-adjusted crystal 2 and plays the total reflective mirror effect are one, so, assemble simply without the adjustment light path.
3) because the right angle circular cone not only has the inverted image effect of prism of corner cube, and since it not the image angle cone prism have three right angle ribs, so emitting laser hot spot distinguish not, so the emitting laser good beam quality
4) because whole resonant cavity, adjusting Q crystal, laser crystal are an integral body, thus any impact shock can not cause the imbalance of resonant cavity or cause the variation of adjusting Q crystal position, so integrated solid laser of the present utility model is reliable and stable.
5) because the whole chamber that shakes, adjusting Q crystal, laser crystal of thanking is an integral body, and the centre does not need the gap, total length depends on the length of laser crystal bar substantially, so realize the laser miniaturization easily.
Description of drawings
Fig. 1 represents prism of corner cube structural representation in the prior art;
Fig. 2 represents right angle conical structure schematic diagram;
Fig. 3 represents the schematic diagram of an embodiment of the utility model passive regulating Q integrated solid laser;
Fig. 4 represents the schematic diagram of an embodiment of the utility model passive regulating Q integrated solid laser.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Make passive regulating Q integrated solid laser of the present utility model with reference to Fig. 3, comprise laser crystal 3, one end of this laser crystal 3 is a right angle circular cone 4, the cone angle of this circular cone 4 is 90 °, the right side of passive Q-adjusted crystal 2 and laser crystal 3 are bonded together, at the left side of passive Q-adjusted crystal 2 plating partial reflection film 1, the side surface of described right angle circular cone 4 is a polished surface, and hair side is processed in the side of described laser crystal 3.
Right angle circular cone 4 is symmetrical about the axis of laser crystal 3, and its summit is on the longitudinal central axis line of described laser crystal 3.
Adopt the Nd:YAG crystal laser rod of φ 6 * 60mm as the laser crystal 3 of working-laser material, the one end is processed into the right angle circular cone, and the cone angle of this circular cone is 90 °, and with the side surface polishing of circular cone, other parts of the side of laser bar still are processed into hair side.The other end of laser bar is by passive Q-adjusted crystal 2 on the existing bonding techniques bonding, and the requirement of bonding is no scattering interface.Passive Q-adjusted crystal 2 adopts Cr:YAG, and plates partial reflection film 1 at the other end end face of passive Q-adjusted crystal 2 according to going out light wavelength, the partial reflection film 1 general deielectric-coating that adopts vacuum evaporation, and coating technique is a prior art, reflectivity is set according to actual needs.The reflectivity R=10% of this partial reflection film 1 in the present embodiment.Because right angle circular cone and laser crystal bar itself that partial reflection film 1 directly is plated in the outer face of passive Q-adjusted crystal 2 and plays the total reflective mirror effect are one, institute so that the utility model without the adjustment light path, thereby assemble simply.The whole chamber that shakes, adjusting Q crystal, laser crystal of thanking is an integral body, the centre does not need the gap, total length depends on the length of laser crystal bar substantially, so realize the laser miniaturization easily, and any impact shock can not cause the imbalance of resonant cavity or cause the variation of adjusting Q crystal position, so integrated solid laser of the present utility model is reliable and stable.
Because the reflecting surface of right angle circular cone is a taper seat, so there is not hard-edge diffraction loss.Those skilled in the art know, as shown in Figure 2, derivation draws through simple geometric, the right angle circular cone can be realized the reflected in parallel of incident light, thus this assembling that not only can solve laser from calm, not off resonance, exempt to debug but also can reduce laser the even distribution in gain media requires to improve beam quality to pump light.Because the existence still of conical tip diffraction loss, the existence of laser beam center bright spot is avoided may damaging of laser crystal, thereby is improved machine life in the time of can reducing the pulse laser work that especially gains higher.Because the right angle circular cone not only has the inverted image effect of prism of corner cube, and since it not the image angle cone prism have three right angle ribs, so emitting laser hot spot distinguish not, so the emitting laser good beam quality.
Make passive regulating Q integrated solid laser of the present utility model with reference to Fig. 3, wherein, as the laser crystal 3 employing Nd:YLF crystal of working-laser material.
Other are with embodiment 1.
Make passive regulating Q integrated solid laser of the present utility model with reference to Fig. 4, as different from Example 1: on passive Q-adjusted crystal 2, do not plate the partial reflection film, but the anti-reflection film of plating, and place an outgoing mirror 5.So just can select the curvature and the transmitance of more suitable outgoing mirror according to pump power, instructions for use, thereby more effective raising fundamental mode volume, make beam quality and go out more closing to reality instructions for use of light energy, this is adequate for those skilled in the art.Such as, under the situation of xenon flash lamp pumping, when maximum impulse injection energy is 40 joules, during repetition rate 10Hz, laser crystal 3 adopts Nd:YAG to be of a size of Φ 6 * 60mm, and the passive Q-adjusted crystal 2 of bonding adopts the initial transmission 20% of Cr:YAG, and this outgoing mirror 5 is placed on the 10mm place, left side of laser bar 3, outgoing mirror 5 is selected planoconvex lens for use, fixes by the mirror holder of prior art; The convex curvature radius of outgoing mirror 5 is 4 meters, and convex surface plating 1064nm reflectivity is 10%, plane plating 1064nm anti-reflection film, lens dimension Φ 10mm, thickness 5mm.Other are with embodiment 1.
It should be noted last that above embodiment is only unrestricted in order to the explanation the technical solution of the utility model.Although the utility model is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, the technical solution of the utility model is made amendment or is equal to replacement, the spirit and scope that do not break away from technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (7)
1, a kind of passive regulating Q integrated solid laser, comprise laser crystal (3), it is characterized in that, one end of this laser crystal (3) is a right angle circular cone (4), the cone angle of this right angle circular cone (4) is 90 °, the other end of described laser crystal (3) and a passive Q-adjusted crystal (2) bonding, other end the place ahead of described passive Q-adjusted crystal (2) common optical axis an outgoing mirror (5) is set.
According to the described passive regulating Q integrated solid laser of claim 1, it is characterized in that 2, described laser crystal (3) is cylindrical.
According to the described passive regulating Q integrated solid laser of claim 1, it is characterized in that 3, the summit of described right angle circular cone is on the axis of described laser crystal (3).
4, according to claim 1,2 or 3 each described passive regulating Q integrated solid lasers, it is characterized in that the side surface of described right angle circular cone (4) is a polished surface, hair side is processed in the side of described laser crystal (3).
5, according to the described passive regulating Q integrated solid laser of claim 1, it is characterized in that on the end face of described outgoing mirror (5), one deck anti-reflection film being arranged at passive Q-adjusted crystal (2).
6, according to the described passive regulating Q integrated solid laser of claim 1, it is characterized in that, described outgoing mirror (5) removed on the end face of described outgoing mirror (5), one deck partial reflection film (1) is arranged at described passive Q-adjusted crystal (2).
According to claim 1,5 or 6 described passive regulating Q integrated solid lasers, it is characterized in that 7, described outgoing mirror (5) is level crossing or the concavees lens or the convex lens of part transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119287 CN200979961Y (en) | 2006-08-11 | 2006-08-11 | An integrated solid laser with passively adjusting Q |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119287 CN200979961Y (en) | 2006-08-11 | 2006-08-11 | An integrated solid laser with passively adjusting Q |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200979961Y true CN200979961Y (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620119287 Expired - Fee Related CN200979961Y (en) | 2006-08-11 | 2006-08-11 | An integrated solid laser with passively adjusting Q |
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| CN (1) | CN200979961Y (en) |
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2006
- 2006-08-11 CN CN 200620119287 patent/CN200979961Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20140811 |
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| EXPY | Termination of patent right or utility model |