CN112909714A - High-power adjustable pulse fiber laser - Google Patents
High-power adjustable pulse fiber laser Download PDFInfo
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- CN112909714A CN112909714A CN202110050248.9A CN202110050248A CN112909714A CN 112909714 A CN112909714 A CN 112909714A CN 202110050248 A CN202110050248 A CN 202110050248A CN 112909714 A CN112909714 A CN 112909714A
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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
- H01S3/0407—Liquid cooling, e.g. by water
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
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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
- H01S3/0404—Air- or gas cooling, e.g. by dry nitrogen
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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
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Lasers (AREA)
- Laser Surgery Devices (AREA)
Abstract
The invention discloses a high-power adjustable pulse optical fiber laser, which comprises a shell, an alarm lamp, a water pump and a fiber laser body, wherein the top of the shell is fixedly connected with the bottom of the alarm lamp, the outer side wall of the shell is fixedly connected with a water tank, the inner side wall of the water tank is fixedly connected with the top of the water pump, the inner side wall of the water tank is fixedly connected with a connecting plate, one end of the water pump is fixedly connected with a water pumping pipe, the high-power adjustable pulse optical fiber laser drives a fan to rotate through the flow of cooling liquid in the water cooling pipe, so that outside air starts to enter through an air inlet, the air pushes a cleaning plate to slide upwards, when the water pump does not work, the cleaning plate drives brush hairs to clean the outer surface of a filter screen under the action of self gravity, good heat dissipation in the shell is ensured, when the temperature reaches a certain, the alarm starts to work to remind personnel to close the device, and the service life of the device is prolonged.
Description
Technical Field
The invention relates to the technical field of lasers, in particular to a high-power adjustable pulse fiber laser.
Background
The optical fiber laser is a laser using rare earth element doped glass fiber as a gain medium, and can be developed on the basis of an optical fiber amplifier: under the action of pump light, high power density is easily formed in the optical fiber, so that the population inversion of the laser energy level of the laser working substance is caused, and when a positive feedback loop (forming a resonant cavity) is properly added, laser oscillation output can be formed. Fiber lasers have a wide range of applications including laser fiber communication, laser space telecommunications, industrial shipbuilding, automotive manufacturing, laser engraving laser marking laser cutting, printing and roll making, metal and nonmetal drilling/cutting/welding (brazing, quenching, cladding and deep welding), military and national defense security, medical instruments and equipment, large infrastructure, as pumping sources for other lasers, and the like. The optical fiber laser is a laser using rare earth element doped glass optical fiber as a gain medium, and can be developed on the basis of an optical fiber amplifier. Under the action of pump light, the power density in the optical fiber is easy to increase, which causes the population inversion of the laser energy level of the laser working substance, and when a positive feedback loop (forming a resonant cavity) is properly added, the laser oscillation output can be formed.
Traditional fiber laser can produce a large amount of heats at the during operation, if the radiating effect is not good can lead to the device to damage, and traditional device radiating effect is not too good, also can't accomplish the timely alarm when the temperature is too high, for this we propose the adjustable pulse fiber laser of high power and solve above-mentioned problem.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a high-power adjustable pulse optical fiber laser.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-power adjustable pulse optical fiber laser comprises a shell, an alarm lamp, a water pump and an optical fiber laser body, wherein the top of the shell is fixedly connected with the bottom of the alarm lamp, the outer side wall of the shell is fixedly connected with a water tank, the inner side wall of the water tank is fixedly connected with the top of the water pump, the inner side wall of the water tank is fixedly connected with a connecting plate, one end of the water pump is fixedly connected with a water pumping pipe, the outer side wall of the water pumping pipe is fixedly connected with the side wall of the connecting plate in a penetrating way, the other end of the water pump is fixedly connected with a water cooling pipe, the inner side wall of the water cooling pipe is tightly attached to the outer side wall of the optical fiber laser body, the outer side wall of the water cooling pipe is fixedly connected with the side wall of the shell in a penetrating way, the outer, the utility model discloses a dust removal device, including water-cooled tube, the inside wall of pivot, the tip fixedly connected with fan of pivot, the lateral wall of casing runs through and has seted up air inlet dust removal mechanism, the lateral wall of casing runs through and has seted up the gas outlet, the inside wall fixedly connected with dust screen of gas outlet, the inside wall bottom fixedly connected with fixed block of casing, the inside wall of fixed block is seted up flutedly, the inside wall top fixedly connected with air pressure switch mechanism of recess, the inside wall fixedly connected with electrode block of recess.
Preferably, the air inlet dust removal mechanism includes that the casing lateral wall runs through the air inlet of seting up, the inside wall fixedly connected with filter screen of air inlet, the spout has been seted up to the inside wall of air inlet, the inside wall sliding connection of spout has the cleaning plate, the tip fixedly connected with brush hair of cleaning plate, the tip of brush hair closely laminates with the lateral wall of filter screen.
Preferably, the air pressure switch mechanism includes the gasbag with recess inside wall top fixed connection, the bottom fixedly connected with button of gasbag, the bottom fixedly connected with plate electrode of button, the bottom fixedly connected with reset spring of plate electrode, reset spring's inside wall cover is equipped with the telescopic link, the top of telescopic link and the bottom fixed connection of plate electrode, the bottom of telescopic link and the inside wall bottom fixed connection of recess, reset spring's bottom and the inside wall bottom fixed connection of recess.
Preferably, the blades are arranged in a symmetrical array, the number of the blades is multiple, the rotating shafts are symmetrically arranged, the number of the rotating shafts is two, the fans are symmetrically arranged, and the number of the fans is two.
Preferably, the water pumping pipe is arranged in an inverted L shape, and the blades are arranged in an arc shape.
Preferably, the bottom of the air inlet is arranged obliquely, and the water cooling pipe is arranged in a thread shape.
Preferably, the tip of clearance board sets up to protruding type, the inside wall of spout sets up to concave type, the lateral wall of the tip of clearance board and the inside wall adaptation of spout, the brush hair is the array setting, the quantity of brush hair is a plurality of, the brush hair is the nylon material.
Preferably, the return spring is made of stainless steel, the return spring is in a compressed state, and the gas bag is internally provided with gas which is easy to expand when heated.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention uses the cooperation of the water pump, the water cooling pipe, the blades, the rotating shaft, the fan, the air inlet, the cleaning plate, the brush hair and the filter screen, the cooling liquid in the water tank is pumped into the water cooling pipe by the work of the water pump, the rotation of the blades is driven by the flow of the cooling liquid to further drive the rotation of the rotating shaft, the rotation of the rotating shaft drives the fan to rotate, so that the fan draws air through the air inlet, the cleaning plate is pushed by external wind to slide upwards, so that the outside air enters the shell through the filter screen to further reduce the temperature in the shell, when the laser device is out of work, the cleaning plate can slide downwards under the action of gravity, so that the brush bristles are driven to clean the outer surface of the filter screen, the blocking of the filter screen is prevented from affecting the internal heat dissipation effect of the shell, good heat dissipation in the shell is guaranteed, and the service life of internal components of the shell is prolonged.
2. According to the invention, through the matched use of the air bag, the button, the electrode plate, the electrode block and the alarm lamp, when the internal temperature of the shell reaches a certain standard, the easily-expandable gas in the air bag can expand, so that the air bag pushes the button to push the electrode plate downwards, the bottom of the electrode plate is attached to the top of the electrode block, a circuit is connected, the alarm lamp starts to work, personnel is prompted to close the optical fiber laser in time, the damage of internal components of the optical fiber laser due to overhigh temperature is prevented, and the service life of the optical fiber laser is prolonged.
In summary, the following steps: according to the invention, the fan is driven to rotate by the flowing of the cooling liquid in the water cooling pipe, so that the external air starts to enter through the air inlet, the air pushes the cleaning plate to slide upwards, when the water pump does not work, the cleaning plate can drive the brush hair to clean the outer surface of the filter screen under the action of self gravity, good heat dissipation in the shell is ensured, when the temperature reaches a certain degree, the air pressure switch mechanism starts to work to enable the circuit to be switched on, the alarm starts to work to remind personnel to switch off the device, and the service life of the device is prolonged.
Drawings
FIG. 1 is a schematic diagram of a front perspective structure of a high-power adjustable pulse fiber laser according to the present invention;
FIG. 2 is a schematic diagram of a front cross-sectional structure of a high-power adjustable pulse fiber laser according to the present invention;
fig. 3 is an enlarged schematic structural diagram of a position a in fig. 2 of a high-power adjustable pulse fiber laser according to the present invention;
fig. 4 is an enlarged schematic structural diagram at B in fig. 2 of a high-power adjustable pulse fiber laser according to the present invention;
fig. 5 is an enlarged schematic structural diagram at C in fig. 2 of a high-power adjustable pulse fiber laser according to the present invention;
fig. 6 is a schematic side sectional structural view of a joint of a blade and a rotating shaft of a high-power adjustable pulse fiber laser provided by the invention.
In the figure: the device comprises a shell 1, an alarm lamp 2, a water pump 3, a water tank 4, a connecting plate 5, a water pumping pipe 6, a water cooling pipe 7, a water draining pipe 8, an air inlet 9, an air outlet 10, a dust screen 11, a sliding chute 12, a cleaning plate 13, bristles 14, a filter screen 15, a fixed block 16, a groove 17, an air bag 18, a button 19, an electrode plate 20, an electrode block 21, a return spring 22, a telescopic rod 23, blades 24, a rotating shaft 25 and a fan 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, a high-power adjustable pulse optical fiber laser comprises a housing 1, an alarm lamp 2, a water pump 3, a fiber laser body, wherein the top of the housing 1 is fixedly connected with the bottom of the alarm lamp 2, the outer side wall of the housing 1 is fixedly connected with a water tank 4, the inner side wall of the water tank 4 is fixedly connected with the top of the water pump 3, the inner side wall of the water tank 4 is fixedly connected with a connecting plate 5, one end of the water pump 3 is fixedly connected with a water pumping pipe 6, the water pumping pipe 6 is arranged in an inverted L shape, the outer side wall of the water pumping pipe 6 is fixedly connected with the side wall of the connecting plate 5 in a penetrating manner, the other end of the water pump 3 is fixedly connected with a water cooling pipe 7, the water cooling pipe 7 is arranged in a threaded manner, the inner side wall of the water cooling pipe 7 is, the outer side wall of the drain pipe 8 is fixedly connected with the side wall of the shell 1 in a penetrating mode, the outer side wall of the drain pipe 8 is fixedly connected with the side wall of the connecting plate 5 in a penetrating mode, the water pump 3 is started, cooling liquid in the water tank 4 is pumped into the water cooling pipe 7 through the water pumping pipe 6 by the water pump 3, then the cooling liquid in the water cooling pipe 7 is discharged into the water tank 4 through the drain pipe 8, circulating flow of the cooling liquid is achieved, heat dissipation of components inside the shell 1 is achieved, stable work of the internal components is guaranteed, and the service life of the internal components is prolonged;
the inner side wall of the water-cooling pipe 7 is rotatably connected with a rotating shaft 25, the outer side wall of the rotating shaft 25 is fixedly connected with blades 24, the blades 24 are arranged in an arc shape, the end part of the rotating shaft 25 is fixedly connected with a fan 26, the blades 24 are arranged in a symmetrical array, the number of the blades 24 is multiple, the rotating shaft 25 is arranged in a symmetrical manner, the number of the rotating shaft 25 is two, the fan 26 is arranged in a symmetrical manner, the number of the fans 26 is two, the side wall of the shell 1 is provided with an air inlet dust removing mechanism in a penetrating manner, the air inlet dust removing mechanism comprises an air inlet 9, the side wall of the shell 1 is provided with a penetrating manner, the bottom of the air inlet 9 is arranged in an inclined manner, the inner side wall of the air inlet 9 is fixedly connected with a filter screen 15, the inner side wall of the air inlet 9 is provided, the outer side wall of the end part of the cleaning plate 13 is matched with the inner side wall of the sliding groove 12, the bristles 14 are arranged in an array mode, the number of the bristles 14 is multiple, the bristles 14 are made of nylon materials, the end part of the bristles 14 is tightly attached to the outer side wall of the filter screen 15, the side wall of the shell 1 is provided with a gas outlet 10 in a penetrating mode, the inner side wall of the gas outlet 10 is fixedly connected with a dustproof net 11, the dustproof net 11 is arranged to prevent external dust from entering the shell 1 and influence the work of components inside the shell 1, the rotation of the blade 24 and the rotation of the rotating shaft 25 are driven through the flow of cooling liquid of the water cooling pipe 7, the rotation of the fan 26 is driven through the rotation of the rotating shaft 25, the fan 26 is enabled to exhaust through the gas inlet 9, external wind pushes the cleaning plate 13 to slide upwards, external air enters the shell through the filter screen 15 and then, when the laser does not work, the cleaning plate 13 slides downwards under the action of gravity to further drive the brush bristles 14 to clean the outer surface of the filter screen 15, and the cleaned dust is discharged through the air inlet 9 obliquely arranged at the bottom, so that the blockage of the filter screen 15 is prevented from influencing the internal heat dissipation effect of the shell 1, and good heat dissipation in the shell is ensured;
the bottom of the inner side wall of the shell 1 is fixedly connected with a fixed block 16, the inner side wall of the fixed block 16 is provided with a groove 17, the top of the inner side wall of the groove 17 is fixedly connected with an air pressure switch mechanism, the inner side wall of the groove 17 is fixedly connected with an electrode block 21, the air pressure switch mechanism comprises an air bag 18 fixedly connected with the top of the inner side wall of the groove 17, the bottom of the air bag 18 is fixedly connected with a button 19, the bottom of the button 19 is fixedly connected with an electrode plate 20, the bottom of the electrode plate 20 is fixedly connected with a reset spring 22, the reset spring 22 is made of stainless steel, the reset spring 22 is in a compressed state, heated and easily expandable gas is arranged in the air bag 18, the inner side wall of the reset spring 22 is sleeved with a telescopic rod 23, the top of the telescopic rod 23 is fixedly connected, when the internal temperature of the shell 1 reaches a certain standard, the internal expandable gas of the air bag 18 can expand, the air bag 18 can push the button 19 to push the electrode plate 20 downwards, the bottom of the electrode plate 20 is attached to the top of the electrode block 21, the circuit is connected, the alarm lamp 2 starts to work, a prompt person can timely close the fiber laser, the fiber laser is prevented from being damaged due to internal components caused by overhigh temperature, and the service life of the fiber laser is prolonged.
In the invention, when the device is used, firstly, the water pump 3 is started, so that the water pump 3 pumps the cooling liquid in the water tank 4 into the water cooling pipe 7 through the water pumping pipe 6, then the cooling liquid in the water cooling pipe 7 is discharged into the water tank 4 through the water discharging pipe 8, the circulating flow of the cooling liquid is realized, the flow of the cooling liquid in the water cooling pipe 7 drives the blades 24 to rotate so as to drive the rotating shaft 25 to rotate, the rotating shaft 25 drives the fan 26 to rotate, the fan 26 draws air through the air inlet 9, so that the external air pushes the cleaning plate 13 to slide upwards, the external air enters the shell through the filter screen 15 and then is discharged through the air outlet 10, the temperature in the shell 1 is further reduced, the cleaning plate 13 slides downwards under the action of self gravity when the laser does not work, the bristles 14 are driven to clean the outer surface of the filter screen 15, and the cleaned dust is discharged through the air inlet 9 with the inclined bottom, prevent that the jam of filter screen 15 from influencing the inside radiating effect of casing 1, reach certain standard at the inside temperature of casing 1, can make the inside easy inflation gas expansion of gasbag 18, and then make gasbag 18 promote button 19 and promote plate electrode 20 downwards, make the bottom of plate electrode 20 laminate mutually with the top of electrode piece 21, and then make the circuit switch-on, warning light 2 begins working, the suggestion personnel in time close the fiber laser, when the inside temperature of casing 1 resumes, make gasbag 18 shrink, and then make gasbag 18 drive button 19 pull down and move plate electrode 20, make the bottom of plate electrode 20 and the unable laminating in top of electrode piece 21, in time report to the police when conveniently reusing the device.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The high-power adjustable pulse fiber laser comprises a shell (1), an alarm lamp (2), a water pump (3) and a fiber laser body, and is characterized in that the top of the shell (1) is fixedly connected with the bottom of the alarm lamp (2), the outer side wall of the shell (1) is fixedly connected with a water tank (4), the inner side wall of the water tank (4) is fixedly connected with the top of the water pump (3), the inner side wall of the water tank (4) is fixedly connected with a connecting plate (5), one end of the water pump (3) is fixedly connected with a water pumping pipe (6), the outer side wall of the water pumping pipe (6) is fixedly connected with the side wall of the connecting plate (5) in a penetrating way, the other end of the water pump (3) is fixedly connected with a water cooling pipe (7), the inner side wall of the water cooling pipe (7) is tightly attached to the outer side wall of the fiber laser body, the outer side, the end part of the water cooling pipe (7) is fixedly connected with a drain pipe (8), the outer side wall of the drain pipe (8) is fixedly connected with the side wall of the shell (1) in a penetrating way, the outer side wall of the drain pipe (8) is fixedly connected with the side wall of the connecting plate (5) in a penetrating way, the inner side wall of the water cooling pipe (7) is rotatably connected with a rotating shaft (25), the outer side wall of the rotating shaft (25) is fixedly connected with blades (24), the end part of the rotating shaft (25) is fixedly connected with a fan (26), the side wall of the shell (1) is provided with an air inlet dust removal mechanism in a penetrating way, the side wall of the shell (1) is provided with an air outlet (10) in a penetrating way, the inner side wall of the air outlet (10) is fixedly connected with a dust screen (11), the inside wall top fixedly connected with atmospheric pressure switch mechanism of recess (17), the inside wall fixedly connected with electrode block (21) of recess (17).
2. The high-power adjustable pulse optical fiber laser device according to claim 1, wherein the air intake and dust removal mechanism comprises an air inlet (9) formed through a side wall of the housing (1), a filter screen (15) is fixedly connected to an inner side wall of the air inlet (9), a chute (12) is formed in the inner side wall of the air inlet (9), a cleaning plate (13) is slidably connected to the inner side wall of the chute (12), bristles (14) are fixedly connected to an end portion of the cleaning plate (13), and an end portion of the bristles (14) is tightly attached to an outer side wall of the filter screen (15).
3. The high-power adjustable pulse optical fiber laser device according to claim 1, wherein the air pressure switch mechanism comprises an air bag (18) fixedly connected with the top of the inner side wall of the groove (17), a button (19) is fixedly connected to the bottom of the air bag (18), an electrode plate (20) is fixedly connected to the bottom of the button (19), a return spring (22) is fixedly connected to the bottom of the electrode plate (20), an expansion link (23) is sleeved on the inner side wall of the return spring (22), the top of the expansion link (23) is fixedly connected with the bottom of the electrode plate (20), the bottom of the expansion link (23) is fixedly connected with the bottom of the inner side wall of the groove (17), and the bottom of the return spring (22) is fixedly connected with the bottom of the inner side wall of the groove (17).
4. The high power tunable pulsed fiber laser according to claim 1, wherein the blades (24) are arranged in a symmetrical array, the number of blades (24) is plural, the rotating shafts (25) are arranged symmetrically, the number of rotating shafts (25) is two, the number of fans (26) is arranged symmetrically, and the number of fans (26) is two.
5. A high power tunable pulsed fiber laser according to claim 1, characterized in that the pumping tube (6) is arranged in an inverted "L" shape and the blades (24) are arranged in an arc shape.
6. The high-power adjustable pulse optical fiber laser device according to claim 1, wherein the bottom of the air inlet (9) is inclined, and the water-cooling pipe (7) is provided with a thread type.
7. The high-power adjustable pulsed optical fiber laser according to claim 2, wherein the end of the cleaning plate (13) is arranged in a convex shape, the inner side wall of the sliding groove (12) is arranged in a concave shape, the outer side wall of the end of the cleaning plate (13) is matched with the inner side wall of the sliding groove (12), the bristles (14) are arranged in an array, the number of the bristles (14) is multiple, and the bristles (14) are made of nylon.
8. A high power tunable pulsed fiber laser according to claim 3, characterized in that the return spring (22) is made of stainless steel, the return spring (22) is in a compressed state, and the balloon (18) is provided with a thermally expandable gas therein.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110050248.9A CN112909714A (en) | 2021-01-14 | 2021-01-14 | High-power adjustable pulse fiber laser |
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| CN202110050248.9A CN112909714A (en) | 2021-01-14 | 2021-01-14 | High-power adjustable pulse fiber laser |
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| CN113617750A (en) * | 2021-06-25 | 2021-11-09 | 北京空间机电研究所 | Device and method for actively removing volatile pollutants in space application laser |
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