CN109378693A - Laser gain structure and laser - Google Patents
Laser gain structure and laser Download PDFInfo
- Publication number
- CN109378693A CN109378693A CN201811512527.7A CN201811512527A CN109378693A CN 109378693 A CN109378693 A CN 109378693A CN 201811512527 A CN201811512527 A CN 201811512527A CN 109378693 A CN109378693 A CN 109378693A
- Authority
- CN
- China
- Prior art keywords
- gain
- laser
- tube
- fluid channel
- gain tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 238000005086 pumping Methods 0.000 claims abstract description 22
- 239000002826 coolant Substances 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 13
- 230000009286 beneficial effect Effects 0.000 claims description 5
- 230000001965 increasing effect Effects 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 abstract description 4
- 230000006854 communication Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0407—Liquid cooling, e.g. by water
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
This application discloses a kind of laser gain structure and laser, the laser gain structure includes the gain tube for improving beam energy under the action of pumping source, forms first fluid channel in the gain tube；It is enclosed with seal pipe on the outside of the gain tube, there are gap between the seal pipe and the gain tube, formation second fluid channel in the gap；The first fluid channel and the second fluid channel are used for through cooling medium, so as to reach unanimity on the outside of the gain tube with the temperature on the inside of the gain tube；The reflective surface for being totally reflected light beam is also enclosed on the outside of the gain tube.Laser gain structure described in the present embodiment is for enabling to diffraction loss of the laser beam in communication process smaller, gain tube good cooling results, energy storage is higher, so as to realize the output of higher energy when improving laser energy.
Description
Technical field
This application involves laser technology fields, in particular to a kind of laser gain structure and laser.
Background technique
Superpower laser has in fields such as national defence, industry, scientific researches to be widely applied.Laser gain module is high average function
The core cell of rate solid state laser, the laser gain module haveing excellent performance are to realize efficient, high light beam quality laser guarantee.
In the prior art, Fig. 1 is please referred to, common laser gain structure is the lath being made of gain media, this
In gaining structure, main laser is with zig-zag type optic path.In this gaining structure, since lath heat is uneven, in lath
Edge, slat center temperature and edge are inconsistent, be just easier generate edge effect, it is, in stave edges
Place, Beam Wave-Front with it is inconsistent at center, to influence the quality of final output beam.
In addition, in order to guarantee efficient heat-sinking capability, the thickness of lath is limited.It is excessive during beam Propagation to avoid
The dimensions length of diffraction loss, single gaining structure cannot be too long.In addition, the width of lath is by gain medium material itself ruler
Very little limitation causes the energy of the laser obtained from single gaining structure relatively limited.
Summary of the invention
In order to overcome above-mentioned deficiency in the prior art, the application's is designed to provide a kind of laser gain structure, institute
Stating laser gain structure includes the gain tube for improving beam energy under the action of pumping source, and the is formed in the gain tube
One fluid channel；
It is enclosed with seal pipe on the outside of the gain tube, there are gaps between the seal pipe and the gain tube, between described
Second fluid channel is formed in gap；The first fluid channel and the second fluid channel are used for through cooling medium, so that
It reaches unanimity on the outside of the gain tube with the temperature on the inside of the gain tube；
The reflective surface for being totally reflected light beam is also enclosed on the outside of the gain tube.
Optionally, refractive index when being full of cooling medium in the first fluid channel, in the first fluid channel
It is consistent with the refractive index of the gain tube.
Optionally, the gain tube has multiple, multiple gain tube nesting settings；
The gain tube includes gain portion and the interconnecting piece for being connected to gain portion both ends；
It is provided with the first backing material between the interconnecting piece of two adjacent described gain tube the same ends, it is adjacent
Two gain tubes the gain portion between form the first fluid channel.
Optionally, the seal pipe includes reflecting segment and the linkage section for being connected to the reflecting segment both ends, the company
Connect and be provided with the second backing material between section and the interconnecting piece adjacent with the linkage section, the reflecting segment and with the reflecting segment phase
The second fluid channel is formed between adjacent gain portion.
Optionally, the seal pipe is consistent with the refractive index of the gain tube；It is cold when being full of in the second fluid channel
But when medium, the refractive index in the second fluid channel is consistent with the refractive index of the gain tube.
Optionally, the gaining structure further includes that the pumping source of pump energy, the pumping source are provided for the gain tube
It is wrapped on the outside of the gain tube.
Optionally, the laser gain structure further include around setting in the seal pipe one week for keeping light beam incoming or
Spread out of the end cap on the inside of the reflective surface.
Optionally, the end cap includes that axle center the first contact surface identical with the axle center of the seal pipe and second contact
Face, first contact surface are bonded with the reflective surface, and relatively described first contact surface of second contact surface is obliquely installed.
Optionally, the refractive index of the end cap is consistent with the refractive index of the seal pipe.
The another object of the application is to provide a kind of laser, and the laser includes swashing as described in any of the above item
Gain of light structure and laser bodies.
In terms of existing technologies, the application has the advantages that
First fluid channel and second fluid channel is respectively set in the inner side and outer side of gain tube in the embodiment of the present application, makes
The inner side and outer side temperature for obtaining gain tube during the work time reaches unanimity, and can be realized the High Efficiency Thermal management to gain tube, from
And the energy storage capacity of laser tube can be greatly improved.In addition, the embodiment of the present application improves the energy of output beam using gain tube
Amount, so that greatly improving along gain tube axial direction clear aperture, diffraction loss substantially reduces；And make laser beam bore big
Width improves, and greatly improves laser output energy.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the propagation schematic diagram of light beam in the lath of the prior art provided by the embodiments of the present application；
Fig. 2 is the schematic perspective view of the first laser gain structure provided by the embodiments of the present application；
Fig. 3 is the axial cross-sectional views of the first laser gain structure provided by the embodiments of the present application；
Fig. 4 is the radial section schematic diagram of the first laser gain structure provided by the embodiments of the present application；
Fig. 5 is the radial section schematic diagram of second of laser gain structure provided by the embodiments of the present application；
Fig. 6 is that light propagates schematic diagram in laser gain structure provided by the embodiments of the present application.
Icon: 10- gain tube；11- first fluid channel；The first backing material of 12-；13- gain portion；14- interconnecting piece；
20- seal pipe；21- second fluid channel；The second backing material of 22-；23- reflecting segment；24- linkage section；30- pumping source；The end 40-
Cap；The first contact surface of 41-；The second contact surface of 42-.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description the application and simplify description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as the limitation to the application.In addition, term " second ", " first ", " second " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in this application.
Referring to figure 2., Fig. 3 and Fig. 4, Fig. 2 are that the application implements a kind of laser gain structure provided, and the present embodiment mentions
The laser gain structure of confession includes gain tube 10, and the gain tube 10 is used to improve beam energy under the action of pumping source 30,
First fluid channel 11 is formed in the gain tube 10 for accommodating cooling medium.
Seal pipe 20 is enclosed on the outside of the gain tube 10, between existing between the seal pipe 20 and the gain tube 10
Gap forms second fluid channel 21 in the gap.Institute's first fluid channel 11 and second fluid channel 21 are for passing through cooling
Medium, so that 10 outside of the gain tube and the temperature of 10 inside of gain tube reach unanimity.10 outside of gain tube is also formed
Wrap up gain tube 10 the reflective surface for being totally reflected light beam, that is to say, that light beam the outside of gain tube 10 certain
It can be totally reflected on a cylinder.Wherein, gain tube 10 can be transparent material, for example, gain tube 10 can be it is transparent
Yttrium aluminum garnet material；Seal pipe 20 is also possible to transparent material.
In the present embodiment, the gain tube 10 is the structure in a tubular form being fabricated by gain media, that is to say, that is increased
Beneficial pipe 10 is being in a closed annulus with the radial cutaway view on its central axes vertical plane.Due to 10 inner side and outer side of gain tube
Have cooling medium, the temperature of 10 inner side and outer side of gain tube reached unanimity, that is to say, that the inside of gain tube 10 and
The temperature in outside can be reduced simultaneously with identical degree, thus realize high efficiency and heat radiation, therefore, the temperature difference on gain tube 10 everywhere
Different little, gain tube 10 can carry higher pump energy.
Optionally, in the present embodiment, when being full of cooling medium in first fluid channel 11, in first fluid channel 11
Refractive index is consistent with the refractive index of gain tube 10.
In the present embodiment, it is contemplated that light beam may go through first fluid channel 11, therefore can be in first fluid channel 11
Inside be passed through with the consistent cooling medium of the refractive index of gain tube 10 so that light beam is traveling to cooling medium from gain tube 10
It, can be with straightline propagation when middle, that is to say, that light beam from gain tube 10 when traveling in cooling medium, no Fresnel reflection
Loss.
In the present embodiment, the radial section of laser gain structure can be centrosymmetric, thus, edge effect is avoided,
It ensure that good laser beam quality, that is to say, that energy of the light beam of laser gain structure output in each orientation is all big
Small more uniform, the energy of the entire light beam of output also greatly improves.
In the present embodiment, the gain tube 10 may each comprise gain portion 13 and be connected to 13 both ends of gain portion
Interconnecting piece 14.Gain portion 13 is the part for amplifying to beam energy, and interconnecting piece 14 is for being arranged the first fid
Material 12 or the second backing material 22.
Fig. 5 is referred to, optionally, in the present embodiment, the gain tube 10 can have multiple, and multiple gain tubes 10 are embedding
Set setting.
The first backing material is provided between the interconnecting piece 14 of two adjacent described 10 the same ends of gain tube
12, the first fluid channel 11 is formed between the gain portion 13 of the gain tube 10 of adjacent two.
In the present embodiment, the refractive index of each gain tube 10 is identical in multiple gain tubes 10, every phase in multiple gain tubes 10
The refractive index and gain tube 10 of part between adjacent two gain tubes 10 are consistent.
For example, two adjacent gain tubes 10, which are located between the interconnecting piece 14 of the same end, can be set the first fid
Expect 12, forms first fluid channel 11 between the gain portion 13 of two adjacent gain tubes 10；It is filled when in first fluid channel 11
When full cooling medium, the refractive index in first fluid channel 11 is consistent with the refractive index of gain tube 10.Certainly, in the present embodiment,
When gain tube 10 has multiple and nested setting, can also be fixed by other means between each gain tube 10.
In the present embodiment, first fluid channel 11, which can be, to be formed by the first backing material 12, is also possible to by gain
What pipe 10 was directly formed, for example, when the nested setting of gain tube 10, the can be directly formed on the inside of the smallest gain tube 10 of diameter
One fluid channel 11 forms first fluid channel 11 between the gain portion 13 of two adjacent gain tubes 10.
In the present embodiment, multiple gain tubes 10 are arranged in nesting, can fully absorb the pump light of the sending of pumping source 30, thus
Improve pumping efficiency.For example, when pumping source 30 is swashed by the pump beam that energy level transition occurs for the substance on excitation gain tube 10
When sending out gain tube 10, another layer of gain being nested in this layer of gain tube 10 is irradiated to across the pump beam of one layer of gain tube 10
On pipe 10, in this way, can excite the substance on illuminated gain tube 10 that energy level transition occurs again.In addition, in the present embodiment
Multiple gain tubes 10 are arranged in nesting, can make in same beam size, i.e., under the outer diameter of output beam, obtain bigger energy
Output beam.
In the present embodiment, the medium of each gain tube 10 in multiple gain tubes 10 is identical, that is to say, that multiple gain tubes
10 refractive index is consistent, and thus can avoid the Fresnel reflection loss of gain tube 10 with cooling medium interface, improves laser
Efficiency.In addition, when the gain tube 10 of nesting setting has multiple, the axle center of each gain tube 10 is consistent in the present embodiment.Such as
This, can avoid the gain nonuniformity as brought by light beam asymmetric transmission in gain tube 10, guarantee beam quality, and make
Near-field beam is more uniform.
Optionally, in the present embodiment, when being full of cooling medium in the first fluid channel 11, the first fluid is logical
Refractive index in road 11 is consistent with the refractive index of the gain tube 10.That is, can when using the laser gain structure,
Keep the refractive index of the cooling medium accommodated in first fluid channel 11 consistent with the cooling medium of gain tube 10.
When being full of cooling medium in the present embodiment, in first fluid channel 11, the refractive index and increasing in first fluid channel 11
The refractive index of beneficial pipe 10 is consistent, and light beam can be made from leading to first fluid channel 11 from gain tube 10 or by first fluid
When road 11 is propagated to gain tube 10, along straightline propagation, avoids that refraction and diffraction occurs, further decrease light beam in communication process
Loss.
Optionally, in the present embodiment, the seal pipe 20 includes reflecting segment 23 and is connected to 23 liang of the reflecting segment
The linkage section 24 at end is provided with the second backing material between the linkage section 24 and the interconnecting piece 14 adjacent with the linkage section 24
22, the second fluid channel 21 is formed between the reflecting segment 23 and the gain portion 13 adjacent with the reflecting segment 23.
Optionally, in the present embodiment, the seal pipe 20 is consistent with the refractive index of the gain tube 10；When the second
When being full of cooling medium in body channel 21, the refractive index one of refractive index and the gain tube 10 in the second fluid channel 21
It causes.
In the present embodiment, light beam can be made from the propagating inside of gain tube 10 to the outside of gain tube 10, or from increasing
The outside of beneficial pipe 10 travels to the inside of gain tube 10, that is to say, that light beam can be made to pass completely through gain tube 10.
In the present embodiment, seal pipe 20 can also fix by other means, at this point, between seal pipe 20 and gain tube 10
Gap formed second fluid channel 21.
In view of the energy of the light beam is when being promoted, external offer energy is needed, therefore, in the present embodiment, optionally,
The gaining structure further includes that the pumping source 30 of pump energy is provided for the gain tube 10, and the pumping source 30 is wrapped in described
10 outside of gain tube.
In the present embodiment, pumping source 30 is fully wrapped around by the gain portion 13 of gain tube 10, and pumping source 30 is wrapped in gain tube
10 outside, the pump energy that gain tube 10 can be made to receive everywhere is uniform, so that the laser beam issued is more evenly.
In the present embodiment, other positions can also be arranged in pumping source 30, for example, pumping source 30 can be arranged in light
The place of entrance, the light for generating pumping source 30 are penetrated from the position that light beam injects laser gain structure with direction identical with light beam
Enter in laser gain structure, to provide energy on gain tube 10.In the present embodiment, it can be set at the reflective surface for improving
Pump the anti-reflection film of light transmission rate.
Please continue to refer to Fig. 3 and Fig. 6, optionally, in the present embodiment, laser gain structure further includes the company around seal pipe 20
Connect the end cap 40 for being used to that light beam to be made to be passed to or spread out of on the inside of the reflective surface of setting in section 24 1 weeks.
The present embodiment is used to that end cap 40 to be arranged in seal pipe 20 when reflective surface is the lateral surface of seal pipe 20, this
Sample, when just can make light beam incidence, along straightline propagation.It, can be with when being enclosed with pumping source 30 on the outside of seal pipe 20 in the present embodiment
Pump light anti-reflection film is set on the outside of seal pipe 20, to improve the transmitance of pump light.
In the present embodiment, interconnecting piece 14 1 weeks of gain tube 10 can also be arranged in the end cap 40, with 20 phase of seal pipe
Setting is passed to gain tube 10 for improving the anti-reflection film of pumping light transmission rate, light beam on the outside of the gain portion 13 of adjacent gain tube 10
When, the anti-reflection film for improving laser transmittance is set on the contact surface of light beam and gain tube 10.When the setting of end cap 40 is sealing
When 20 outside of pipe, setting is for improving the anti-reflection film of pumping light transmission rate on the outside of the reflecting segment 23 of seal pipe 20.
In the present embodiment, in one week setting end cap 40 of gain tube 10, that is to say, that end cap 40 is ring structure, is injected
The light beam of laser gain structure can be annular beam.The present embodiment can make light beam travel to gain from the side of gain tube 10
In pipe 10, to obtain the biggish annular beam of width.Width described in the present embodiment refers to the outer diameter of annular beam and interior
The difference of diameter.
Optionally, in the present embodiment, when end cap 40 be arranged on gain tube 10 when, the end cap 40 include axle center with it is described
Identical first contact surface 41 in the axle center of gain tube 10 and the second contact surface 42, first contact surface 41 and the reflective surface
Fitting, relatively described first contact surface 41 of second contact surface 42 are obliquely installed.
In the present embodiment, the first contact surface 41 of end cap 40 is bonded with reflective surface, the second contact surface 42 of end cap 40 and
One contact surface 41 is at certain angle of inclination setting, allows light beam to enter end cap 40 from the second contact surface 42, then in end cap
End cap 40 is pierced by 40 the first contact surface 41.
For example, when the reflective surface is the lateral surface of seal pipe 20, the first contact surface 41 and seal pipe 20 of end cap 40
Lateral surface fitting.Second contact surface 42 tilts at an angle with the first contact surface 41, wherein end cap 40 and seal pipe 20 can
To be to be integrally formed.
When the reflective surface is the medial surface of seal pipe 20, the inside of the first contact surface 41 and seal pipe 20 of end cap 40
Cylinder fitting where face.Second contact surface 42 tilts at an angle with the first contact surface 41, wherein end cap 40 and seal pipe 20
It can be integrated molding.
When the reflective surface is the lateral surface of the maximum gain tube 10 of diameter, the first contact surface 41 of end cap 40 and the increasing
The lateral surface of beneficial pipe 10 is bonded.Second contact surface 42 tilts at an angle with the first contact surface 41, wherein end cap 40 and gain
Pipe 10 can be integrated molding.In the present embodiment, end cap 40 is set on reflective surface, so that injecting the light beam on the inside of reflective surface
Width is adjustable.Further, it is also possible to adjust light beam by the difference of the tilt angle of the second contact surface 42 to end cap 40
Incident angle.
Optionally, in the present embodiment, when the end cap 40 is arranged on the gain tube 10, the refraction of the end cap 40
Rate is consistent with the refractive index of the gain tube 10.
In the present embodiment, the refractive index of the end cap 40 is consistent with the refractive index of gain tube 10, can make in light beam
Light by end cap 40 when being propagated on the inside of reflective surface, along straightline propagation, so as to reduce the energy loss of light beam.
Optionally, in the present embodiment, when the end cap 40 is arranged in the seal pipe 20, the refraction of the end cap 40
Rate is consistent with the refractive index of the seal pipe 20.
In the present embodiment, the refractive index of the end cap 40 is consistent with the refractive index of seal pipe 20, can make in light beam
Light by end cap 40 when being propagated on the inside of reflective surface, along straightline propagation, so as to reduce the energy loss of light beam.
The another object of the application is to provide a kind of laser, and the laser includes swashing as described in any of the above item
Gain of light structure.
In the present embodiment, in the laser using laser described in any of the above item, enable to, the laser of generation
Quality greatly improves.
Width of light beam can be extended to centimetres by the embodiment of the present application.For example, by design main laser incident angle, it can
It is very easy to extend to laser width greater than 10mm, the length of gain tube 10 will be no longer limited by diffraction loss, gain at this time
The length of pipe 10 will be greatly improved up to meter level, the energy storage capacity of single gain tube 10.In addition, when realizing higher power output,
The quantity of concatenated laser gain structure is greatly decreased, and loss reduces, and efficiency of laser is higher, and system is more succinct, compact.
In conclusion first fluid channel and second is respectively set in the inner side and outer side of gain tube in the embodiment of the present application
Body channel can be realized so that the inner side and outer side temperature of gain tube reaches unanimity during the work time to the efficient of gain tube
Heat management, so as to greatly improve the energy storage capacity of laser tube.In addition, the embodiment of the present application improves output using gain tube
The energy of light beam, so that greatly improving along gain tube axial direction clear aperture, diffraction loss substantially reduces；And make laser light
Beam bore greatly improves, and greatly improves laser output energy.
In embodiment provided herein, it should be understood that disclosed device, it can also be by another way
It realizes.The apparatus embodiments described above are merely exemplary.
It should be noted that, in this document, such as second and first or the like relational terms are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that not only include those elements including a series of elements, article or equipment, but also including
Other elements that are not explicitly listed, or further include for this article or the intrinsic element of equipment.Not more
In the case where limitation, the element that is limited by sentence "including a ...", it is not excluded that include the element article or
There is also other identical elements in equipment.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of laser gain structure, which is characterized in that the laser gain structure includes for mentioning under the action of pumping source
The gain tube of bloom beam energy, the gain tube is interior to form first fluid channel；
It is enclosed with seal pipe on the outside of the gain tube, there are gap between the seal pipe and the gain tube, in the gap
Form second fluid channel；The first fluid channel and the second fluid channel are used for by cooling medium, so that described
It reaches unanimity on the outside of gain tube with the temperature on the inside of the gain tube；
The reflective surface for being totally reflected light beam is also enclosed on the outside of the gain tube.
2. laser gain structure according to claim 1, which is characterized in that full of cooling in the first fluid channel
When medium, the refractive index in the first fluid channel is consistent with the refractive index of the gain tube.
3. laser gain structure according to claim 2, which is characterized in that the gain tube has multiple, multiple increasings
Beneficial pipe nesting setting；
The gain tube includes gain portion and the interconnecting piece for being connected to gain portion both ends；
First backing material is set between the interconnecting piece of two adjacent described gain tube the same ends, adjacent two
The first fluid channel is formed between the gain portion of the gain tube.
4. laser gain structure according to claim 3, which is characterized in that the seal pipe includes reflecting segment and connects respectively
The linkage section at the reflecting segment both ends is connect, second is provided between the linkage section and the interconnecting piece adjacent with the linkage section
Timbering material forms the second fluid channel between the reflecting segment and the gain portion adjacent with the reflecting segment.
5. laser gain structure according to claim 4, which is characterized in that the refraction of the seal pipe and the gain tube
Rate is consistent；
Refractive index and the gain tube when being full of cooling medium in the second fluid channel, in the second fluid channel
Refractive index it is consistent.
6. laser gain structure according to claim 1-5, which is characterized in that the gaining structure further include for
The gain tube provides the pumping source of pump energy, and the pumping source is wrapped on the outside of the gain tube.
7. laser gain structure according to claim 1-5, which is characterized in that the laser gain structure is also wrapped
It includes around setting in the seal pipe one week for keeping light beam incoming or spreading out of the end cap on the inside of the reflective surface.
8. laser gain structure according to claim 7, which is characterized in that the end cap includes axle center and the seal pipe
Identical first contact surface in axle center and the second contact surface, first contact surface be bonded with the reflective surface, described second
Relatively described first contact surface of contact surface is obliquely installed.
9. laser gain structure according to claim 8, which is characterized in that the refractive index of the end cap and the seal pipe
Refractive index it is consistent.
10. a kind of laser, which is characterized in that the laser includes such as the described in any item laser gains of claim 1-9
Structure and laser bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811512527.7A CN109378693B (en) | 2018-12-11 | 2018-12-11 | Laser gain structure and laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811512527.7A CN109378693B (en) | 2018-12-11 | 2018-12-11 | Laser gain structure and laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109378693A true CN109378693A (en) | 2019-02-22 |
| CN109378693B CN109378693B (en) | 2024-02-20 |
Family
ID=65373154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811512527.7A Active CN109378693B (en) | 2018-12-11 | 2018-12-11 | Laser gain structure and laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109378693B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992003858A1 (en) * | 1990-08-23 | 1992-03-05 | Australian Electro Optics Pty. Ltd. | Fibre bundle coupled circular slab laser system |
| KR20000019121A (en) * | 1998-09-09 | 2000-04-06 | 이종훈 | Diffused reflection body pumping device for diode laser pumping solid laser |
| US20060227841A1 (en) * | 2005-04-07 | 2006-10-12 | Savich Michael S | Tube solid-state laser |
| US20110182308A1 (en) * | 2007-02-22 | 2011-07-28 | Ullman Alan Z | Monolithic Fiber Laser Beam Combiner |
| CN103746274A (en) * | 2013-12-27 | 2014-04-23 | 中国科学院理化技术研究所 | Side pumping laser module |
| CN103986059A (en) * | 2014-04-25 | 2014-08-13 | 北京心润心激光医疗设备技术有限公司 | Laser device |
| CN104009374A (en) * | 2014-06-13 | 2014-08-27 | 南通卓锐激光科技有限公司 | High-output-power annular carbon dioxide laser |
| 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 |
| CN104505704A (en) * | 2014-12-12 | 2015-04-08 | 中国科学院光电研究院 | Novel laser amplifier |
| CN105261919A (en) * | 2015-11-25 | 2016-01-20 | 中国工程物理研究院激光聚变研究中心 | Ytterbium-doped yttrium aluminium garnet multislab laser amplifier based on graded doping and cryogenic helium gas cooling |
| CN107104350A (en) * | 2017-05-25 | 2017-08-29 | 衢州学院 | A kind of laser amplifier |
| CN209071810U (en) * | 2018-12-11 | 2019-07-05 | 中国工程物理研究院激光聚变研究中心 | Laser gain structure and laser |
-
2018
- 2018-12-11 CN CN201811512527.7A patent/CN109378693B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992003858A1 (en) * | 1990-08-23 | 1992-03-05 | Australian Electro Optics Pty. Ltd. | Fibre bundle coupled circular slab laser system |
| KR20000019121A (en) * | 1998-09-09 | 2000-04-06 | 이종훈 | Diffused reflection body pumping device for diode laser pumping solid laser |
| US20060227841A1 (en) * | 2005-04-07 | 2006-10-12 | Savich Michael S | Tube solid-state laser |
| US20110182308A1 (en) * | 2007-02-22 | 2011-07-28 | Ullman Alan Z | Monolithic Fiber Laser Beam Combiner |
| CN103746274A (en) * | 2013-12-27 | 2014-04-23 | 中国科学院理化技术研究所 | Side pumping laser module |
| CN103986059A (en) * | 2014-04-25 | 2014-08-13 | 北京心润心激光医疗设备技术有限公司 | Laser device |
| CN104009374A (en) * | 2014-06-13 | 2014-08-27 | 南通卓锐激光科技有限公司 | High-output-power annular carbon dioxide laser |
| 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 |
| CN104505704A (en) * | 2014-12-12 | 2015-04-08 | 中国科学院光电研究院 | Novel laser amplifier |
| CN105261919A (en) * | 2015-11-25 | 2016-01-20 | 中国工程物理研究院激光聚变研究中心 | Ytterbium-doped yttrium aluminium garnet multislab laser amplifier based on graded doping and cryogenic helium gas cooling |
| CN107104350A (en) * | 2017-05-25 | 2017-08-29 | 衢州学院 | A kind of laser amplifier |
| CN209071810U (en) * | 2018-12-11 | 2019-07-05 | 中国工程物理研究院激光聚变研究中心 | Laser gain structure and laser |
Non-Patent Citations (2)
| Title |
|---|
| MATOS, R等: "High-efficiency solar laser pumping by a modified ring-array concentrator", 《OPTICS COMMUNICATIONS》, vol. 420, 1 August 2018 (2018-08-01), pages 6 - 13 * |
| 侯霞等: "拱形激光二极管侧抽运Nd∶YAG固体激光器的实验研究", 《光学学报》, no. 05, 31 December 2005 (2005-12-31), pages 623 - 628 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109378693B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9726820B2 (en) | End pumped PWG with tapered core thickness | |
| Xu et al. | High-efficiency solar-pumped laser with a grooved Nd: YAG rod | |
| US9746604B2 (en) | Light guide apparatus and fabrication method thereof | |
| JPH07109909B2 (en) | Integrated laser diode pump laser device | |
| Kracht et al. | Comparison of crystalline and ceramic composite Nd: YAG for high power diode end-pumping | |
| JPS593661B2 (en) | Radiant energy transfer device | |
| Cai et al. | Efficient 38.8 W/m 2 solar pumped laser with a Ce: Nd: YAG crystal and a Fresnel lens | |
| CN209071810U (en) | Laser gain structure and laser | |
| US8406267B2 (en) | Grazing-incidence-disk laser element | |
| CN1501358A (en) | Encoding apparatus of audio signal, audio disc and disc reproducing apparatus | |
| Kim et al. | Monolithic all-glass pump combiner scheme for high-power fiber laser systems | |
| CN102420386A (en) | Disc solid laser based on off-axis paraboloids | |
| US6975792B1 (en) | Method and apparatus for coupling light into a waveguide using a slit | |
| CN103346467A (en) | Multi-laser-medium integration gain system | |
| CN107078463A (en) | LD modules | |
| CN101572386A (en) | Tilted slab laser amplifier | |
| CN109378693A (en) | Laser gain structure and laser | |
| FR2765411A1 (en) | SOLID LASER DEVICE WITH SEMICONDUCTOR EXCITATION | |
| CN101540470A (en) | Laser | |
| Guan et al. | 5.04% system slope efficiency solar-pumped Nd: YAG laser by a heliostat–parabolic mirror system | |
| JP6141595B2 (en) | Anti-transverse laser oscillator with axial cooling for emitting a laser beam | |
| CN110137788A (en) | A kind of side-pumped laser head device for reducing encircled energy and alleviating fuel factor | |
| Shibaev et al. | Mechanically tunable microlasers based on highly viscous chiral liquid crystals | |
| EP3347750A1 (en) | Light guide apparatus and fabrication method thereof | |
| CN104332807A (en) | Slab laser amplifier and laser output method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |