CN110571632A - phase-change cooling heat capacity type rotating laser - Google Patents
phase-change cooling heat capacity type rotating laser Download PDFInfo
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- CN110571632A CN110571632A CN201910939268.4A CN201910939268A CN110571632A CN 110571632 A CN110571632 A CN 110571632A CN 201910939268 A CN201910939268 A CN 201910939268A CN 110571632 A CN110571632 A CN 110571632A
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- 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
- H01S3/025—Constructional details of solid state lasers, e.g. housings or mountings
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- 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
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- 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
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
Abstract
the invention discloses a phase-change cooling heat capacity type rotating laser, which comprises a laser pumping unit, a laser medium, a phase-change cooling unit and a laser resonance unit, wherein the laser pumping unit is used for pumping laser medium; a laser pumping unit for providing pumping light; the laser medium is irradiated by the pump light and stimulated to radiate and emit laser under the action of the pump light; the laser medium keeps translational rotation, so that the pump light irradiates different positions of the laser medium; the phase change cooling unit is connected with the laser medium through the heat pipe, heat on the laser medium is transferred to the phase change cooling unit through the heat pipe, and the laser medium keeps translational rotation so that the heat pipe is not twisted; and the laser resonance unit is used for outputting the laser emitted by the laser medium after oscillation. According to the invention, the laser medium can be cooled in a phase change cooling mode through the translational rotation of the laser medium, and the heat pipe is not distorted due to the translational rotation of the laser medium, so that the heat pipe efficiency is increased, the working time of the laser is ensured to be long, no heat effect is generated, and longer working time is obtained.
Description
Technical Field
the invention relates to the technical field of laser, in particular to a phase-change cooling heat capacity type rotating laser.
background
The thermal capacitance laser is not a new type of laser, and the "thermal capacitance" refers to an operation mode in which the laser medium is not cooled during laser irradiation, but is forcibly cooled only in a gap between two laser irradiation processes. When the laser works in a heat capacity mode, because heat dissipation is not carried out, the temperature gradient in the laser medium is small, and the optical thermal distortion caused by theory is small; in addition, the stress on the surface of the laser medium appears as compressive stress due to the surface temperature being higher than the internal temperature. Because the pressure that the laser medium can bear is at least 5 times stronger than the tension, the damage threshold of the laser medium is greatly improved, and the allowable pumping strength is also greatly improved.
there are two fatal disadvantages to the thermal capacity working mode: 1) the beam quality of the laser is rapidly degraded along with the increase of the light-emitting time, which is mainly caused by pumping nonuniformity, and even if an advanced adaptive optical technology is adopted, the beam quality cannot be guaranteed to be always kept within a diffraction limit of 2 times; 2) the working mechanism of the heat capacity laser determines that the laser cannot emit light for a long time, and cooling needs tens of seconds to minutes, so that the practical requirement is difficult to meet. Therefore, the heat capacity laser has the capability of scaling up to 100kW, but the application prospect is not optimistic.
the structure shown in fig. 1 has the characteristics of a phase-change cooled heat capacity laser. In fig. 1 the laser medium is rotated and a small area of the edge of the laser medium is heated by the pump excitation, but due to the rotation of the laser medium, the heating of this small area lasts only a short time, during which the cooling of the medium is negligible. Fig. 2 is a schematic structural diagram of a phase change cooling system, and as shown in fig. 2, a heat pipe is connected with a laser medium and a cold plate, the cold plate is connected with a condenser through an air outlet pipe and a liquid return pipe, and the phase change medium is placed in the cold plate. The heat of laser medium passes through the heat pipe and transmits to the cold plate, and phase transition medium takes place the phase transition in the cold plate, becomes gaseous by liquid, and gaseous passes through the outlet duct and reaches the condenser, and the condenser is under the effect of cooling water for gaseous heat of giving off takes place the phase transition, becomes liquid by gaseous, and cold plate is got back to the rethread liquid return pipe, circulates from this and reaches the heat refrigerated purpose to laser medium.
Fig. 1 shows a phase-change cooling heat capacity type rotating laser, a laser medium rotates around its center, the laser medium is connected with a phase-change cooling unit through a heat pipe, pumping light is incident from the edge of the laser medium, a specific rotating process is shown in fig. 3, as shown in fig. 3 (a), (b), (c), and (D) are position change diagrams of laser medium rotation, the laser medium is driven to rotate around the center continuously by the rotation of a turntable, so that the position of pump light irradiation changes continuously, and the irradiation position of the pump light changes cyclically from A, B, C to D of the laser medium. Because the laser medium is irradiated by the pump light, the laser medium needs to be cooled, and when the laser medium is cooled, if the traditional phase-change cooling mode shown in fig. 1 is used, one end of the heat pipe is driven to continuously rotate towards one direction due to the continuous rotation of the laser medium, while the other end of the heat pipe is kept still, so that the heat pipe is continuously twisted, the heat conduction efficiency is reduced, and meanwhile, the service life of the system is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the technical problems of continuous distortion of a heat pipe, low heat conduction efficiency and short service life of a system caused by the autorotation of a laser medium of the traditional phase-change cooling heat capacity laser.
to achieve the above object, the present invention provides a phase-change cooling heat capacity type rotating laser, including: the laser device comprises a laser pumping unit, a laser medium, a phase change cooling unit and a laser resonance unit;
The laser pumping unit is used for providing pumping light;
The laser medium is used for receiving the irradiation of the pump light and emitting laser by stimulated radiation under the action of the pump light; the laser medium keeps translational rotation, so that the pump light irradiates different positions of the laser medium; the side surface of the laser medium is contacted with a phase-change cooling medium, and refrigeration is carried out through phase-change cooling;
the phase change cooling unit is connected with the laser medium through the heat pipe, heat on the laser medium is transferred to the phase change cooling unit through the heat pipe, and the laser medium keeps translational rotation so that the heat pipe is not twisted;
and the laser resonance unit is used for outputting the laser emitted by the laser medium after oscillation.
specifically, the heated laser medium is cooled when the laser medium is located outside the predetermined region during rotation, and the laser medium maintains a translational rotation with a constant direction during rotation.
Specifically, the size of the laser medium is selected to be suitable, the size of the medium is increased as much as possible under the possible condition, and the medium is ensured to have enough cooling time in the rotating process.
in one possible embodiment, the laser further comprises: and the translational rotation unit is used for controlling the laser medium to keep translational rotation.
In one possible embodiment, the translational rotary unit includes: the device comprises a fixed flat plate, a first guide rail, a second guide rail, a first slide rail, a second slide rail, a roller, a bearing and a turntable;
The laser medium is packaged in the roller, and the packaging surfaces at two ends of the roller can be transparent;
The roller is characterized in that a first round hole is formed in the fixed flat plate, one end of the roller is embedded into the first round hole and fixedly connected with the fixed flat plate, a first pulley is connected to the top end of the fixed flat plate and slidably connected with a first guide rail, the first pulley can slide left and right on the first guide rail, the first guide rail is connected with a second pulley, the second pulley is slidably connected with a second guide rail, the second pulley can slide up and down on the second guide rail, and the track directions of the first guide rail and the second guide rail are perpendicular;
The rotary table is provided with a second round hole, the center of the second round hole is not coincident with the center of the rotary table, the circle center of the rotary table is arranged in the second round hole, the edge of the second round hole is connected with a bearing, and the other end of the roller is embedded into the bearing and connected with the bearing.
in a possible embodiment, the turntable is controlled to rotate, under the action of the bearing, the turntable drives the roller to rotate relatively, and the roller keeps rotating in a translation manner under the constraint of the fixed flat plate, the first guide rail, the second guide rail, the first slide rail and the second slide rail, so that the laser medium keeps rotating in a translation manner.
In one possible embodiment, the pump light is incident on a central location of the turntable and on a non-central location of the lasing medium.
in one possible embodiment, the laser pumping unit comprises: a laser and a coupling module;
The laser is used for emitting pump light;
the coupling module is used for coupling the pump light to the laser medium after shaping the pump light.
in one possible embodiment, the laser medium, the phase change cooling unit and the translational rotary unit are all located in the laser resonance unit.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
The invention provides a phase-change cooling heat capacity type rotating laser, which adopts a laser medium rotating in a translation manner to obtain pulse laser output, and a heat pipe is not twisted due to the translation rotation of the laser medium, so that the efficiency of the heat pipe is improved. Firstly, the region pumped by the semiconductor laser in the laser medium is periodically changed, the same region of the laser medium can avoid continuously absorbing heat for a long time, and heat absorption and heat dissipation are alternately carried out, so that the laser medium can bear pump light with higher power to obtain laser output with higher power; secondly, the region pumped by the semiconductor laser in the laser medium is periodically changed, so that when one region is used, other regions are in a cooling state, the cooling time is reduced, the working time is prolonged, and finally, the heat effect is reduced to a certain extent and the beam quality is improved due to the fact that different regions of the laser medium are recycled.
in summary, the phase change cooling heat capacity type rotary laser provided by the invention has the advantages of high efficiency and long service life of the heat pipe, long working time of the laser, no heat effect, and capability of obtaining longer working time and good beam quality.
Drawings
FIG. 1 is a schematic diagram of a conventional phase-change cooling heat capacity type rotating laser medium;
FIG. 2 is a schematic diagram of a conventional phase change cooling system;
FIG. 3 is a schematic diagram of a conventional phase-change cooling heat capacity type rotating laser medium;
FIG. 4 is a schematic diagram of a phase change cooling thermal capacitance rotating laser according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the rotation of a phase change cooled rotating laser medium according to an embodiment of the present invention;
FIG. 6 is a mechanical diagram of a translational rotary unit for rotating a laser medium of a phase-change cooling heat capacity rotary laser according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the rotation of a rotating laser medium of a phase change cooling thermal mass rotation laser according to an embodiment of the present invention;
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: the laser device comprises a semiconductor laser pumping unit 1, a laser medium 2, a laser resonance unit 4, a semiconductor laser 11, a coupling module 12, a phase change cooling unit 31 and a heat pipe 32.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In order to solve the defects of the prior art, the invention provides a phase-change cooling heat capacity type rotating laser which obtains higher power and longer working time.
In order to achieve the above object, the present invention provides a phase-change cooling heat capacity type rotating laser, including a semiconductor laser pumping unit, a rotating laser medium unit, a phase-change cooling unit and a laser resonance unit, wherein:
the semiconductor laser pumping unit comprises a semiconductor laser and a pumping optical coupling system, the laser resonance unit comprises a lens forming a resonant cavity, and the phase change cooling unit comprises a phase change cooling unit and a heat pipe, wherein the rotary laser medium unit is arranged in the laser resonance unit; the phase change cooling unit comprises a phase change cooling unit and a heat pipe;
the pump light emitted by the semiconductor laser is coupled into the rotating laser medium in the laser resonance unit after being shaped by the pump light coupling module, so that the rotating laser medium generates stimulated radiation under the excitation of the pump light, and the laser generated by the stimulated radiation is output from the laser resonance unit;
A heat pipe in the phase change cooling unit is connected with the phase change cooling unit and the laser medium;
The rotating laser medium is a disc-shaped, elliptic disc-shaped, circular ring-shaped or elliptic ring-shaped laser medium in a rotating state, the pumping light and the laser oscillation light path enter or pass through a non-central position of the rotating disc-shaped gain medium, and different positions of the rotating laser medium generate stimulated radiation in the rotating process.
In one embodiment of the invention, the rotating laser medium revolves around the normal line of the incident position of the pump light at the edge of the rotating laser medium as a central axis, and the pump light and the laser oscillation light path are incident or pass through the non-central position of the rotating laser medium; or, the rotating phase laser medium rotates by taking the central axis of the rotating phase laser medium as a central axis, and the pump light and the laser oscillation light path are incident or pass through from a non-central position of the rotating laser medium.
in one embodiment of the present invention, the laser resonance unit needs to have a good matching of the laser mode with the pump light,
In one embodiment of the invention, the laser resonance unit comprises an output mirror, the pump light is incident to the rotating laser medium through the pump light coupling module, the rotating laser medium generates stimulated radiation under the excitation of the pump light, the laser generated by the stimulated radiation oscillates in the laser resonance unit, and the coupling module emits the laser; the laser medium rotates, the pump light is incident into the rotating laser medium through the pump light coupling system again, the rotating laser medium generates stimulated radiation under the excitation of the pump light, laser generated by the stimulated radiation oscillates in the laser resonance unit, and the coupling module emits the laser; the laser medium continues to rotate, and the process is repeated; after laser emission, the heat of the just-excited region is conducted to a phase-change cooling unit by using a heat pipe, and the phase-change cooling unit cools a laser medium: and forming the output of the phase-change cooling heat capacity laser. The core idea is as follows: the heated laser medium is moved out of the pumping region by the rotation of the laser medium, and is cooled outside the pumping region by a phase change cooling unit.
The invention adopts the scheme of a phase-change cooling heat capacity type rotating laser medium laser, the area of a laser medium pumped by a semiconductor laser changes periodically, when one area is heated, the other area is in a cooling state, after the area is pumped and heated, the laser medium rotates to the next area, the area which is just pumped and heated is connected with a phase-change cooling unit by a heat pipe for cooling, and after the pumping is finished, the laser medium rotates to form a cycle. In the whole process, the laser does not need to be cooled when the laser is generated, thereby reducing the heat effect, improving the beam quality, breaking through the limitation of working time, working for longer time,
Specifically, as shown in fig. 4, the present invention provides a phase-change cooling heat capacity type rotating laser medium laser, which includes a semiconductor laser pumping unit 1, a rotating laser medium 2, a phase-change cooling unit 3, and a laser resonance unit 4, wherein:
The semiconductor laser pumping unit 1 comprises a semiconductor laser 11 and a pumping light coupling module 12, the phase change cooling unit 3 comprises a phase change cooling unit 31 and a heat pipe 32, the heat pipe is connected with a laser medium 2 and the phase change cooling unit 31, and the laser resonance unit 4 comprises a lens forming a resonant cavity; the rotating laser medium is arranged in the laser resonance unit 4;
the pump light emitted by the semiconductor laser 11 is shaped by the pump light coupling system 12 and then coupled into the rotating laser medium 2 in the laser resonance unit 4, so that the rotating laser medium 2 generates stimulated radiation under the excitation of the pump light, the laser generated by the stimulated radiation oscillates in the laser resonance unit 3 and is output from the laser resonance unit 4, and the heat generated by the stimulated radiation of the laser medium 2 is transferred to the phase change cooling unit 31 for cooling after the laser is output by the heat pipe 32.
In the embodiment of the invention, the pump light coupling system is composed of a lens or an optical fiber, the pump light is shaped into a suitable size through a lens group and coupled into the laser medium, and the pump light can also be coupled into the laser medium through the optical fiber. In the embodiment of the present invention, the lens assembly is used as a pump light coupling system to illustrate the technical solution of the present invention.
in a specific embodiment of the present invention, the rotating laser medium is a disk-shaped, elliptical disk-shaped, circular ring-shaped, or elliptical ring-shaped gain medium in a rotating state, the pump light and the laser oscillation optical path enter or pass through a non-central position of the rotating disk-shaped gain medium, and different positions of the rotating laser medium generate stimulated radiation during the rotation process.
The rotating laser medium 2 is not stationary but is in a dynamically rotating state. As shown in fig. 5, in order to obtain uniform stimulated radiation at the gain interface, a disk-shaped gain medium may be used and should be in a uniform rotation state. Where L denotes the direction in which the pump light and the stimulated radiation generate laser light. Specifically, the L may be the center of the turntable.
In specific implementation, as shown in fig. 6, for the mechanical structure schematic diagram of the translational rotation unit provided in the embodiment of the present invention, a disc-shaped gain medium may be clamped in a roller, the middle is a light through hole, the roller is in interference fit with the inner rings of two bearings, the outer rings of the two bearings are in interference fit with the inner ring of a turntable, the turntable is fixed on a base, a large synchronous pulley is fixed with the turntable and is in force transmission rotation through a key connection, a small synchronous pulley is fixed with the rotation shaft of a motor and is in force transmission rotation through a key connection, and a force transmission rotation is performed between the small synchronous pulley and the large synchronous pulley through a synchronous belt, so that the motor provides power for rotation of the turntable, and thus the roller for clamping the disc-shaped laser medium is driven by the motor, the. And the pumping light and the laser oscillation light path are incident from the edge of the rotating disc-shaped laser medium and pass through, and the area of the laser medium excited radiation changes periodically. In order to prevent the laser medium from rotating, the guide rails and the pulleys are used for fixing the laser medium, so that the laser medium can translate but cannot rotate freely, one guide rail is responsible for moving up and down, the other guide rail is responsible for moving left and right, the guide rails are connected through the pulleys, and the guide rails responsible for moving up and down are fixed on a fixed base. Specifically, components such as the motor and the timing belt are not shown in fig. 6, and a specific structure thereof can be imagined by those skilled in the art, and are not described herein.
wherein, an eccentric round hole is arranged in the turntable, and the roller is embedded into the round hole by combining a bearing. The radius of the roller is larger than one-half of the radius of the turntable, so that when the pump light is incident from the center of the turntable, the pump light can be irradiated onto the gain medium of the roller. It is understood that the gain medium is a laser medium.
specifically, as shown in fig. 6, the turntable is driven by other power devices to rotate around its midpoint, and an eccentric area in the turntable is connected to a section of the roller for encapsulating the laser medium by using a bearing, and the two sections can rotate relative to each other, and then the other end of the roller is connected to a fixed flat plate, and the two sections cannot move relative to each other; the fixed flat plate is connected with the guide rail through the pulley, the connection can only control left and right movement and can not move up and down, and then the pulley is utilized to connect the guide rail with the other guide rail which controls up and down movement, so that the translation rotation of the laser medium is realized. The laser medium translation rotation ensures that the heat pipe is not driven to rotate, the heat pipe is prevented from being twisted, and the heat conduction efficiency and the service life of the heat pipe are ensured.
And the rotating laser medium 2 is cooled by taking away heat through the phase change cooling unit 3, so that the heat effect in the gain medium is reduced, and high-power and high-beam-quality laser output is obtained.
Specifically, as shown in fig. 7, which is a schematic rotation diagram of a rotating laser medium in an embodiment of the present invention, the rotating laser medium 2 revolves around a normal line of an incident position of pump light at an edge thereof as a central axis, and the pump light and a laser oscillation optical path are incident or pass through from a non-central position of the rotating laser medium; the specific implementation method is as shown in fig. 7 (a), the pump light is incident from the end face of the solid laser medium disc (or rod) and is located at the disc edge position L, and the laser medium disc is far larger than the laser pump phase change region whose center is located at the L position. The laser medium disk is initially in the position 1 shown in fig. 7 (a), the center of the laser medium disk rotates counterclockwise around the point L, but the direction is kept unchanged, that is, the orientation of the medium disk represented by ABCD in the figure is kept unchanged all the time during the rotation, so that a section of the heat conducting heat pipe can be ensured not to rotate. When the disc rotates to position 2 shown in fig. 7 (B), the area of the disc in the laser pumping region also changes from point a to point B, which ensures that the disc edge arc AB continues to enter the gain region during a 1/4 cycle of rotation of the disc center. When the disc is rotated from the position shown in fig. 7 (B) to the position shown in fig. 7 (C), the area of the disc in the laser pumping region changes from point B to point C, and the disc edge arc BC continues to enter the gain region during this 1/4 rotation period. When the disc is rotated from the position shown in fig. 7 (C) to the position shown in fig. 7 (D), the area of the disc in the laser pumping region changes from point C to point D, and the disc edge arc CD continues to enter the gain region during this 1/4 rotation period. Therefore, the ABCD areas are sequentially pumped, as long as the center of the disc continuously rotates around the L point, and meanwhile, the direction of the disc is kept unchanged, the circumference ABCD at the edge of the disc continuously enters the pumping gain area, meanwhile, the phase change medium and the laser medium are connected through the heat pipe, heat generated by the laser medium is conducted to the phase change cooling unit through the heat pipe, and cooling of the laser medium is achieved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. a phase change cooling heat capacity type rotary laser comprising: the laser device comprises a laser pumping unit, a laser medium, a phase change cooling unit and a laser resonance unit;
The laser pumping unit is used for providing pumping light;
The laser medium is used for receiving the irradiation of the pump light and emitting laser by stimulated radiation under the action of the pump light; the laser medium keeps translational rotation, so that the pump light irradiates different positions of the laser medium;
the phase change cooling unit is connected with the laser medium through the heat pipe, heat on the laser medium is transferred to the phase change cooling unit through the heat pipe, and the laser medium keeps translational rotation so that the heat pipe is not twisted;
and the laser resonance unit is used for outputting the laser emitted by the laser medium after oscillation.
2. the phase change cooled heat capacity rotary laser of claim 1, further comprising: and the translational rotation unit is used for controlling the laser medium to keep translational rotation.
3. The phase change cooling heat capacity type rotary laser according to claim 1, wherein the translational rotary unit comprises: the device comprises a fixed flat plate, a first guide rail, a second guide rail, a first slide rail, a second slide rail, a roller, a bearing and a turntable;
The laser medium is packaged in the roller, and the packaging surfaces at two ends of the roller can be transparent;
The roller is characterized in that a first round hole is formed in the fixed flat plate, one end of the roller is embedded into the first round hole and fixedly connected with the fixed flat plate, a first pulley is connected to the top end of the fixed flat plate and slidably connected with a first guide rail, the first pulley can slide left and right on the first guide rail, the first guide rail is connected with a second pulley, the second pulley is slidably connected with a second guide rail, the second pulley can slide up and down on the second guide rail, and the track directions of the first guide rail and the second guide rail are perpendicular;
The rotary table is provided with a second round hole, the center of the second round hole is not coincident with the center of the rotary table, the circle center of the rotary table is arranged in the second round hole, the edge of the second round hole is connected with a bearing, and the other end of the roller is embedded into the bearing and connected with the bearing.
4. the phase-change cooling heat capacity type rotating laser device according to claim 3, wherein the turntable is controlled to rotate, under the action of the bearing, the turntable drives the roller to rotate relatively, and under the constraint of the fixed flat plate, the first guide rail, the second guide rail, the first slide rail and the second slide rail, the roller keeps translational rotation, so that the laser medium keeps translational rotation.
5. the phase-change cooled heat-capacity rotary laser according to claim 3, wherein the pump light is incident on a central position of the turntable and on a non-central position of the laser medium.
6. the phase-change cooled heat-capacitor rotary laser according to any one of claims 1 to 5, wherein the laser pumping unit comprises: a laser and a coupling module;
The laser is used for emitting pump light;
the coupling module is used for coupling the pump light to the laser medium after shaping the pump light.
7. The phase-change cooling heat capacity type rotary laser device as claimed in claim 2, wherein the laser medium, the phase-change cooling unit and the translational rotation unit are all located in the laser resonance unit.
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