CN103746276A - Laser device and gain medium component thereof - Google Patents
Laser device and gain medium component thereof Download PDFInfo
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- CN103746276A CN103746276A CN201310706211.2A CN201310706211A CN103746276A CN 103746276 A CN103746276 A CN 103746276A CN 201310706211 A CN201310706211 A CN 201310706211A CN 103746276 A CN103746276 A CN 103746276A
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Abstract
The invention discloses a laser device and a gain medium component thereof. The gain medium component comprises a thin-sheet gain medium and a transparent medium. An optical surface of the transparent medium is provided with 2N incident surfaces so that pumping can be performed by adopting N beams of pumping light simultaneously. The N beams of pumping light can be respectively incident from N adjacent incident surfaces. N pumping sources can respectively generate the pumping light. The pumping light generated by each pumping source can be incident from one of the incident surfaces. After absorption of the thin-sheet gain medium, laser light is excited. Total power of the pumping light is equivalent to the sum of power of the N beams of pumping light. Besides, the N beams of pumping light are incident from different directions so that absorption rate of the thin-sheet gain medium can be enhanced. Compared with pumping of a single pumping source of a conventional laser device, with application of the aforementioned gain medium component, requirements for laser power can be realized by the laser device without adopting the high-power and high-brightness pumping sources or complex optical loop design. Therefore, quality and stability of laser light output can be effectively enhanced by the aforementioned laser device.
Description
Technical field
The present invention relates to laser field, particularly relate to a kind of laser and gain media assembly thereof.
Background technology
All solid state laser refers to the solid state laser using semiconductor laser as pumping source, one of lasing light emitter of at present tool potentiality.Thin slice gain media in all solid state laser generally adopts the gain media of the very little and lamellar material that lateral dimension is larger of thickness as laser.In order to reach needed laser power, general laser need to adopt the pumping source pumping of high power, high brightness, and pumping source is had relatively high expectations.And, in order to improve the absorption efficiency of pump light, must use baroque optics mirror-lens system to make pump light Multiple through then out thin slice gain media to improve the absorption efficiency of pump light, cost is higher, and regulates complicated.
And generally thin slice gain media is fixed on the red copper cooling heat sink of high heat conductance.In cooling heat sink, there is cooling fluid microchannel, in cooling fluid microchannel, have swiftly flowing cooling fluid.First heat is transmitted to cooling heat sink from thin slice gain media by heat conducting mode, then in cooling fluid microchannel, carries out heat exchange with cooling fluid, then by swiftly flowing cooling fluid, heat is taken away.Therefore, cooling heat sink can provide cooling for the thin slice gain media back side.When high power operation, easily cause cooling dynamics inadequate.Therefore, can cause in thin slice gain media temperature the highest, and edge's temperature is lower, and then causes thin slice gain media center outwards to expand, form " bowl-shape " distortion of similar back-off, and then bring thermal lensing effect.
In addition, due to regulating system complexity, the out of order probability of one of them link strengthens, thereby affects the normal operation of laser.Therefore, make the Laser output quality of traditional laser and stability not high.
Summary of the invention
Based on this, be necessary can effectively improve the quality of Laser output and the laser of stability and gain media assembly thereof for providing a kind of.
A kind of gain media assembly, comprising:
Thin slice gain media, is platy structure, and the one side of described thin slice gain media is rear surface; And
The transparent medium identical with the refractive index of described thin slice gain media, described transparent medium comprises the optical surface of pyramid, described optical surface comprises that bottom surface and 2N the edge along bottom surface extend, and the plane of incidence triangular in shape, N is more than or equal to 2 integer, and described bottom surface and described thin slice gain media dorsad a side of described rear surface fit tightly.
In an embodiment, described transparent medium also comprises circular bottom plate therein, and described bottom surface and described circular bottom plate fit tightly, and described thin slice gain media and described circular bottom plate fit tightly away from a side of described bottom surface.
In an embodiment, it is characterized in that therein, on the described plane of incidence, plating is provided with the high transmittance film layer to described pump light and the high transmission of laser.
In an embodiment, it is characterized in that therein, transparent medium is the rectangular pyramid bodily form, and described bottom surface is rectangle.
A kind of laser, comprise passive base, produce the pumping source of pump light, for exporting the light output precision of described pump light, to the high reflection of laser and the laser mirror to the high transmission of pump light and the laser output mirror to the high reflection of pump light, described pumping source, described laser mirror and described laser output mirror are installed on described base, described laser mirror is positioned at the front end of described smooth output precision, and described laser also comprises:
Gain media assembly as described in any one in above preferred embodiment, described gain media assembly is installed on described base;
Described pumping source is N, and the pump light of N described pumping source generation is respectively from N adjacent described plane of incidence vertical incidence;
Wherein, described Laser output border and described in one of them the plane of incidence be oppositely arranged, described pump light enters described thin slice gain media through described transparent medium, and make described thin slice gain media excite to produce laser, described laser output mirror and described laser mirror form resonant cavity, described laser reflects through described rear surface, between described laser output mirror and described laser mirror, carrys out back reflective.
Therein in an embodiment, also comprise the cooling device that is fixed on described base, described cooling device comprises cooling cavity, bonnet and inlet and liquid outlet for cooling fluid turnover, the hollow columnar structures that described cooling cavity is both ends open, the opening of described bonnet sealing described cooling cavity one end;
Described thin slice gain media is installed on described cooling cavity one end of described bonnet dorsad, and by one end sealing of described bonnet dorsad of described cooling cavity, to be formed for accommodating the closed cavity of described cooling fluid with described bonnet and described cooling chamber body, described rear surface is positioned at described closed cavity.
In an embodiment, the angle of the described plane of incidence and described bottom surface is more than or equal to therein
so that described pump light and described laser, in described rear surface, total reflection occurs, wherein, n1 is the refractive index of described thin slice gain media to described pump light, and n2 is the refractive index of described cooling fluid to described pump light, and n1 is greater than n2.
Therein in an embodiment, also comprise pump light speculum, in described pump light speculum and two described planes of incidence that are oppositely arranged, one be arranged in parallel, from the pump light of plane of incidence incident described in another, in described rear surface, occur after total reflection, pump light speculum described in directive, and reflect on the surface of described pump light speculum, so that described pump light is reflexed in described thin slice gain media.
In an embodiment, described base is provided with line slideway therein, and described cooling device and described thin slice gain media are slidably mounted on described line slideway, and described thin slice gain media is fixed with respect to described cooling device.
In an embodiment, also comprise mounting structure therein, described transparent medium also comprises circular bottom plate, and described mounting structure comprises:
Fixed mount, is slidably located on described line slideway, and described fixed mount is platy structure, and its upper end is provided with semicircular the first groove, and described cooling cavity is contained in described the first groove;
Pressing plate, its lower end is provided with semicircular the second groove, and described pressing plate is fixed on described fixed mount, so that described cooling cavity is held between described the first groove and the bottom of described the second groove;
Mounting panel, which is provided with circular mounting hole, the diameter of described installing hole is less than the diameter of described circular bottom plate, and described transparent medium is arranged in described installing hole, described mounting panel by described circular bottom plate pressure holding in the edge of the opening of described cooling cavity, so that described seal chamber sealing;
Threaded fastener, screws togather with described fixed mount and described mounting panel, successively so that described mounting panel is fixed on described fixed mount.
Above-mentioned laser and gain media assembly, because the optical surface of transparent medium has 2N the plane of incidence.Therefore, can adopt N bundle pump light to carry out pumping simultaneously.N bundle pump light can be respectively from N adjacent plane of incidence incident.N pumping source can produce respectively pump light, and the pump light that each pumping source produces is from one of them plane of incidence incident, after the absorption of thin slice gain media, and excitation laser.The gross power of pump light is equivalent to the power sum of N bundle pump light, and N bundle pump light from different directions incident can improve the absorptivity of thin slice gain media.Compare the single pumping source pumping of traditional laser, above-mentioned laser is by above-mentioned gain media assembly, and without the pumping source that adopts high power, high brightness, and the design of complicated optical circuit can reach the requirement to laser power.Therefore, above-mentioned laser can effectively improve quality and the stability of Laser output.
Accompanying drawing explanation
Fig. 1 is the structural representation of laser in preferred embodiment of the present invention;
Fig. 2 is the explosive view of laser shown in Fig. 1;
Fig. 3 is the end view of laser shown in Fig. 1;
Fig. 4 is the structural representation of transparent medium in laser shown in Fig. 1;
Fig. 5 is the structural representation of gain media assembly in laser shown in Fig. 1;
Fig. 6 is the index path in horizontal direction in the present embodiment;
Fig. 7 is the index path on vertical direction in the present embodiment.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing, provided preferred embodiment of the present invention.But the present invention can realize in many different forms, be not limited to embodiment described herein.On the contrary, providing the object of these embodiment is to make to the understanding of disclosure of the present invention more thoroughly comprehensively.
It should be noted that, when element is called as " being fixed on " another element, it can be directly on another element or also can have an element placed in the middle.When an element is considered to " connection " another element, it can be directly connected to another element or may have centering elements simultaneously.
Unless otherwise defined, all technology of using are herein identical with the implication that belongs to the common understanding of those skilled in the art of the present invention with scientific terminology.The term using in specification of the present invention herein, just in order to describe the object of specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
Refer to Fig. 1, Fig. 2 and Fig. 3, the laser 100 in preferred embodiment of the present invention comprises base 110, pumping source 120, light output precision 130, laser mirror 140, laser output mirror 150, cooling device 160, thin slice gain media 170 and transparent medium 180.Wherein, thin slice gain media 170 forms gain media assembly 101 with transparent medium 180.Transparent medium 180 is fitted with thin slice gain media 170, and the refractive index of the two is identical.
Thin slice gain media 170 consists of the transparent dielectric material doped with active ions.Concrete, transparent dielectric material can be: the one in yttrium-aluminium-garnet (YAG), Gd-Ga garnet (GGG), glass, vanadate, tungstates, pottery.Active ions can be: Yb
3+, Nd
3+, Tm
3+, Ho
3+in one or more.After pump light directive thin slice gain media 170, the energy of part pump light is absorbed by the active ions in thin slice gain media 170, active ions generation energy level transition, thus produce laser.
See also Fig. 4 and Fig. 5, thin slice gain media 170 is platy structure.Thin slice gain media 170 is installed on cooling cavity 161 one end of bonnet 163 dorsad, and by one end sealing of bonnet 163 dorsad of cooling cavity 161, to be formed for accommodating the closed cavity (not shown) of cooling fluid with bonnet 163 and described cooling cavity 161.Thin slice gain media 170 is rear surface 171 towards the one side of bonnet 163, and rear surface 171 is positioned at closed cavity.Therefore.When being full of cooling fluid in closed cavity, thin slice gain media 170 directly contacts with cooling fluid.When laser 100 is worked, when thin slice gain media 170 produces heat, thin slice gain media 170 can by rear surface 171 directly and cooling fluid carry out exchange heat.The type of cooling of the back side microchannel cooling heat sink adopting than conventional laser, thin slice gain media 170 directly and cooling fluid carry out heat exchange and can increase substantially cooling effectiveness, thereby while reducing high power operation, the thermal lensing effect of thin slice gain media 170.
In the present embodiment, bottom surface 1814 fits tightly with circular bottom plate 183, and thin slice gain media 170 fits tightly away from a side of bottom surface 1814 with circular bottom plate 183.Concrete, thin slice gain media 170 adopts the glue-free direct adhering technique of chemistry (CADB) to be bonded on transparent medium 180.Due to the thickness of junction minimum (100 μ m～1500 μ m), thus light do not reflect during through both junctions.In addition, thin slice gain media 170 also can be realized and being fitted tightly by other modes such as intermolecular force and circular bottom plate 183.Be appreciated that in other embodiments, circular bottom plate 183 can be omitted, and bottom surface 1814 and thin slice gain media 170 dorsad a side of rear surface 171 directly fit tightly, and also can realize its function.
Wherein, pumping source 120 is N, and the pump light that N pumping source 120 produces is respectively from the individual adjacent plane of incidence 1812 vertical incidence of N.Laser output border 150 is oppositely arranged with one of them plane of incidence 1812.The pump light that N pumping source 120 produces enters thin slice gain media 170 through N the plane of incidence 1812 of transparent medium 180 respectively, and makes thin slice gain media 170 excite to produce laser.The laser producing after the reflection of rear surface 171, directive laser output mirror 150.Part Laser output, another part laser in laser output mirror 150 is reflected back thin slice gain media 170, and through rear surface 171 again after secondary reflection, directive laser mirror 140.Laser output mirror 150 forms resonant cavity with laser mirror 140, and laser carrys out back reflective between laser output mirror 150 and laser mirror 140, thereby further vibration is amplified.
Because can adopting at most N pumping source 120, laser 100 thin slice gain media 170 is carried out to pumping simultaneously.Compare single pumping source 120 pumpings, can reduce the requirement to pumping source 120 power and brightness on the one hand.Secondly, the pumping from different directions of multiple pumping sources 120, can improve the utilance to pump light.And the gross power of pump light equals each pumping source 120 power sums.Therefore,, without adopting complicated reflex circuit to improve the absorptivity of pump light, can reach the demand to power.
Concrete, one of them of the plane of incidence 1812 that laser mirror 140 is adjacent with N be arranged in parallel, and laser output mirror 150 is oppositely arranged with another exit facet 1812 that this exit facet 1812 is oppositely arranged.Therefore, the pump light of one of them generation of N pumping source 120 is through laser mirror 140 directive rear surfaces 171, and directive laser output mirror 150 after reflecting by rear surface 171.Get back in thin slice gain media 170 after laser output mirror 150 reflections with the pump light that laser beam is coaxial, thereby improved the utilance to this pump light.
In addition, the active ions in thin slice gain media 170 are after the energy of absorptive pumping light is activated, and wherein few a part of ion is chaotic ion.Chaotic ion can not be contributed to the generation of laser, but pure consumed energy, thereby cause energy loss.Because thin slice gain media 170 is directly bonded on transparent medium 180, chaotic ion wherein can be derived via transparent medium 180.Therefore, transparent medium 180 can play inhibition amplified spont-aneous emission, i.e. the effect of ASE effect, thereby the stability of raising laser 100.
Wherein, thin slice gain media 170 is n1 to the refractive index of pump light.And the cooling fluid adopting is liquid, it is n1 to the refractive index of pump light that cooling fluid is generally less than thin slice gain media 170 to the refractive index n 2 of pump light.When pump light enters thin slice gain media 170, and be more than or equal at the incidence angle a of rear surface 171
time, in rear surface 171, there is total reflection in pump light.
Concrete is analyzed as follows, for meeting the condition that total reflection occurs, incidence angle
should meet:
Therefore obtain:
Pump light directive thin slice gain media 170, and there is total reflection in rear surface 171.Unabsorbed pump light is directive laser output mirror 150 after reflection, at laser output mirror 150, reflect, and be reflected back in thin slice gain media 170, thin slice gain media 170 carries out absorption again to the energy of pump light, thereby improves the utilance to pump light.Because produced laser and pump light are coaxial, therefore full transmitting also can occur laser on rear surface 171.Therefore, the common resonant cavity (figure is mark not) that forms between laser mirror 140, laser output mirror 150 and rear surface 171, laser is in resonant cavity internal reflection, thus vibration is amplified.In resonant cavity, laser is between laser mirror 140 and laser output mirror 150 after multiple reflections, and the active ions quantity that makes thin slice gain media 170 that transition occur increases, thereby plays the effect of amplifying laser.
In the present embodiment, the plane of incidence 1812 is more than or equal to the angle of bottom surface 1814
pump light vertical sand shooting during to the plane of incidence 1812, can make pump light enter in transparent medium 180 to greatest extent, thereby improves the utilance to pump light.And the light of vertical incidence can not reflect, but the rear surface 171 of direct directive thin slice gain media 170.According to geometrical principle, pump light equals the angle of the plane of incidence 1812 and bottom surface 1814 in the incidence angle on surface 171.Therefore, when the plane of incidence 1812 and the angle of bottom surface 1814 are more than or equal to
time, can make pump light be greater than critical angle in the incidence angle of rear surface 171, therefore can there is total reflection from the pump light of the plane of incidence 1812 vertical incidence and the laser of generation on rear surface 171.
Owing to being more than or equal in the incidence angle of rear surface when pump light
time, there is total reflection in rear surface 171 in pump light and laser, therefore establish highly reflecting films without rear surface 171 platings at thin slice gain media 170, just can realize a laser pumping reflection of light.Therefore, can eliminate the thermal lensing effect causing because of highly reflecting films and thin slice gain media 170 deformation difference.If be appreciated that, pump light and laser do not hologony, and also can adopt the mode of plating reflectance coating in rear surface 171 to realize pump light and sharp reflection of light.
Specifically in the present embodiment, laser mirror 140 and laser output mirror 150 be arranged in parallel with respect to two planes of incidence that are oppositely arranged 1812 respectively.Therefore, pump light can carry out repeatedly reciprocal reflection at laser mirror 140 and laser output mirror 150, thereby further improves the utilance to pump light.
In the present embodiment, also comprise pump light speculum 102, in pump light speculum 102 and two planes of incidence that are oppositely arranged 1812, one be arranged in parallel, from the pump light of another plane of incidence 1812 incidents, on rear surface 171, occur after total reflection, directive pump light speculum 102, and reflect on the surface of pump light speculum 102, so that pump light is reflexed in thin slice gain media 170.Therefore, the pump light not absorbed by thin slice gain media 170, from the plane of incidence 1812 penetrates, gets back to again in thin slice gain media 170 by the reflection of pump light speculum 102, so that thin slice gain media 170 absorbs again to pump light, thereby improve the utilance to pump light.
Further, specifically in the present embodiment, pump light speculum 102 is N-1, and N-1 pump light speculum 102 is parallel with N-1 plane of incidence 1812 and be oppositely arranged respectively.N-1 pump light speculum 102 is corresponding one by one with N-1 pumping source 120.N-1 the pump light directive rear surface 171 that pumping source 120 produces, and occur after total reflection in rear surface 171, the pump light speculum 102 that unabsorbed pump light directive is corresponding, and being reflected back in thin slice gain media 170 by corresponding pump light speculum 102.The pump light that another one pumping source 120 produces and laser coaxial, can be left the country and 150 be reflected back in thin slice gain media 170 by laser beam.Therefore, except the pump light of one of them pumping source 120 can be reflected by laser output mirror 150 can thin slice gain media 170 so that outside pump light absorbed again by thin slice gain media.The pump light that all the other N-1 pumping source 120 sends, after 171 total reflections of rear surface, is reflected back thin slice gain media 170 by pump light speculum 102, so that pump light is absorbed again by thin slice gain media.Therefore, pump light speculum 102 can further improve the absorptivity of thin slice gain media 170 to pump light.
In the present embodiment, base 110 is provided with line slideway 113, and cooling device 160 and thin slice gain media 170 are slidably mounted on line slideway 113, and thin slice gain media 170 is fixing with respect to cooling device 160.Therefore, by the just position of adjustable cooling device 160 and thin slice gain media 170 of sliding.
Further, laser 100 also comprises mounting structure 190, and mounting structure 190 comprises fixed mount 191, pressing plate 193, mounting panel 195 and threaded fastener 197.
Mounting panel 195 is provided with circular mounting hole 1952, the diameter of installing hole 1952 is less than the diameter of circular bottom plate 183, transparent medium 180 is arranged in installing hole 1952, mounting panel 195 by circular bottom plate 183 pressure holdings in the edge of the opening of cooling cavity 161, so that seal chamber sealing.
Threaded fastener 197, screws togather with described fixed mount 191 and described mounting panel 195, successively so that mounting panel 195 is fixed on fixed mount 191.By threaded together securing member 197, can force mounting panel 195 by circular bottom plate 183 pressure holdings in the edge of the opening of cooling cavity 161.
Because fixed mount 191 and mounting panel 195 are all arranged on line slideway 113, and be merely able to move along line slideway 113.So the power that fixed mount 191 and mounting panel 195 are applied is all parallel to line slideway 113.Force direction that fixed mount 191 and mounting panel 195 are applied is contrary, size is identical, and on same straight line.Therefore, be conducive to reduce to cause due to pressure stress and the distortion of thin slice gain media 170 inside, be conducive to further improve the stability of laser 100.
In the present embodiment, transparent medium 180 is rectangular pyramid, and bottom surface 1814 is rectangle, and pumping source 120 is 2.
See also Fig. 6 and Fig. 7, transparent medium 180 has 4 planes of incidence 1812, and in horizontal direction, be oppositely arranged two, and two of being oppositely arranged on vertical direction.At its horizontal direction plane of incidence 1812, a branch of pump beam is set and carries out pumping, in its vertical direction, another bundle pump light is set and carries out pumping.Therefore, can adopt 2 pumping sources 120 thin slice gain media 170 to be carried out to pumping simultaneously.Like this, compare single pumping source pumping, can pass through the stack of two pumping sources 120, to reduce the requirement to pumping source 120 power and brightness.Secondly, 2 pumping source 120 pumpings from different directions, can effectively improve the absorption efficiency of thin slice gain media 170 to pump light.In addition, in the case of not using complex structure, regulating difficult pump light refraction-reflection system, just can realize the high absorption efficiency of thin slice gain media 170 to pump light.It is pointed out that in other embodiments, the exiting surface 181 of transparent medium 180 can be hexagonal pyramid body, eight pyramids, ten pyramids etc., and corresponding pumping source 120 can be respectively three, four, five etc.
Compared with traditional laser, laser 100 and gain media assembly 101 thereof have at least following advantage:
Owing to thering is 2N the plane of incidence 1812.Therefore, can adopt N bundle pump light to carry out pumping simultaneously.N bundle pump light can be respectively from N the adjacent plane of incidence 1812 incidents.N pumping source 120 can produce respectively pump light, and the pump light that each pumping source 120 produces is from one of them plane of incidence 1812 incident, after the absorption of thin slice gain media 170, and excitation laser.The gross power of pump light is equivalent to the power sum of N bundle pump light, and N bundle pump light from different directions incident can improve the absorptivity of thin slice gain media 170.Compare the single pumping source pumping of traditional laser, laser 100 is by gain media assembly 101, and without the pumping source that adopts high power, high brightness, and the design of complicated optical circuit can reach the requirement to laser power;
The rear surface 171 of thin slice gain media 170 is positioned at closed cavity.When being full of cooling fluid in closed cavity, thin slice gain media 170 directly contacts with cooling fluid.The type of cooling of back side microchannel cooling heat sink adopting than conventional laser, thin slice gain media 170 can be directly and cooling fluid carry out heat exchange.Therefore, increased substantially cooling effectiveness, the thermal lensing effect of thin slice gain media 170 while reducing high power operation;
In addition, when pump light is more than or equal in the incidence angle of rear surface
time, in rear surface 171, there is total reflection in pump light.And, the laser that thin slice gain media produces is coaxial with pump light, therefore establish highly reflecting films without the rear surface plating at thin slice gain media 170, just can realize pump light and sharp reflection of light, thereby eliminate the thermal lensing effect causing because of highly reflecting films and thin slice gain media deformation difference.Therefore, laser 100 can effectively suppress thermal lensing effect, thereby improves quality and the stability of Laser output.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a gain media assembly, is characterized in that, comprising:
Thin slice gain media, is platy structure, and the one side of described thin slice gain media is rear surface; And
The transparent medium identical with the refractive index of described thin slice gain media, described transparent medium comprises the optical surface of pyramid, described optical surface comprises that bottom surface and 2N the edge along bottom surface extend, and the plane of incidence triangular in shape, N is more than or equal to 2 integer, and described bottom surface and described thin slice gain media dorsad a side of described rear surface fit tightly.
2. gain media assembly according to claim 1, it is characterized in that, described transparent medium also comprises circular bottom plate, and described bottom surface and described circular bottom plate fit tightly, and described thin slice gain media and described circular bottom plate fit tightly away from a side of described bottom surface.
3. gain media assembly according to claim 1, is characterized in that, on the described plane of incidence, plating is provided with the high transmittance film layer to described pump light and the high transmission of laser.
4. gain media assembly according to claim 1, is characterized in that, transparent medium is the rectangular pyramid bodily form, and described bottom surface is rectangle.
5. a laser, comprise passive base, produce the pumping source of pump light, for exporting the light output precision of described pump light, to the high reflection of laser and the laser mirror to the high transmission of pump light and the laser output mirror to the high reflection of pump light, described pumping source, described laser mirror and described laser output mirror are installed on described base, described laser mirror is positioned at the front end of described smooth output precision, it is characterized in that, described laser also comprises:
Gain media assembly as described in the claims 1 to 4 any one, described gain media assembly is installed on described base;
Described pumping source is N, and the pump light of N described pumping source generation is respectively from N adjacent described plane of incidence vertical incidence;
Wherein, described Laser output border and described in one of them the plane of incidence be oppositely arranged, described pump light enters described thin slice gain media through described transparent medium, and make described thin slice gain media excite to produce laser, described laser output mirror and described laser mirror form resonant cavity, described laser reflects through described rear surface, between described laser output mirror and described laser mirror, carrys out back reflective.
6. laser according to claim 5, it is characterized in that, also comprise the cooling device that is fixed on described base, described cooling device comprises cooling cavity, bonnet and inlet and liquid outlet for cooling fluid turnover, the hollow columnar structures that described cooling cavity is both ends open, the opening of described bonnet sealing described cooling cavity one end;
Described thin slice gain media is installed on described cooling cavity one end of described bonnet dorsad, and by one end sealing of described bonnet dorsad of described cooling cavity, to be formed for accommodating the closed cavity of described cooling fluid with described bonnet and described cooling chamber body, described rear surface is positioned at described closed cavity.
7. laser according to claim 6, is characterized in that, the angle of the described plane of incidence and described bottom surface is more than or equal to
so that described pump light and described laser, in described rear surface, total reflection occurs, wherein, n1 is the refractive index of described thin slice gain media to described pump light, and n2 is the refractive index of described cooling fluid to described pump light, and n1 is greater than n2.
8. laser according to claim 7, it is characterized in that, also comprise pump light speculum, in described pump light speculum and two described planes of incidence that are oppositely arranged, one be arranged in parallel, from the pump light of plane of incidence incident described in another, in described rear surface, there is after total reflection pump light speculum described in directive, and reflect on the surface of described pump light speculum, so that described pump light is reflexed in described thin slice gain media.
9. laser according to claim 6, it is characterized in that, described base is provided with line slideway, and described cooling device and described thin slice gain media are slidably mounted on described line slideway, and described thin slice gain media is fixed with respect to described cooling device.
10. laser according to claim 9, is characterized in that, also comprises mounting structure, and described transparent medium also comprises circular bottom plate, and described mounting structure comprises:
Fixed mount, is slidably located on described line slideway, and described fixed mount is platy structure, and its upper end is provided with semicircular the first groove, and described cooling cavity is contained in described the first groove;
Pressing plate, its lower end is provided with semicircular the second groove, and described pressing plate is fixed on described fixed mount, so that described cooling cavity is held between described the first groove and the bottom of described the second groove;
Mounting panel, which is provided with circular mounting hole, the diameter of described installing hole is less than the diameter of described circular bottom plate, and described transparent medium is arranged in described installing hole, described mounting panel by described circular bottom plate pressure holding in the edge of the opening of described cooling cavity, so that described seal chamber sealing;
Threaded fastener, screws togather with described fixed mount and described mounting panel, successively so that described mounting panel is fixed on described fixed mount.
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| CN104064955A (en) * | 2014-06-13 | 2014-09-24 | 中国科学院西安光学精密机械研究所 | Immersed cooling solid laser |
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| US20130301117A1 (en) * | 2012-05-11 | 2013-11-14 | Luis E. Zapata | Methods, systems, and apparatus for high energy optical-pulse amplification at high average power |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064955A (en) * | 2014-06-13 | 2014-09-24 | 中国科学院西安光学精密机械研究所 | Immersed cooling solid laser |
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