CN111934172A - Lath type carbon dioxide glass tube laser - Google Patents
Lath type carbon dioxide glass tube laser Download PDFInfo
- Publication number
- CN111934172A CN111934172A CN202010944635.2A CN202010944635A CN111934172A CN 111934172 A CN111934172 A CN 111934172A CN 202010944635 A CN202010944635 A CN 202010944635A CN 111934172 A CN111934172 A CN 111934172A
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- glass tube
- laser
- discharge
- carbon dioxide
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- 239000011521 glass Substances 0.000 title claims abstract description 75
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 32
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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Classifications
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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
- H01S3/041—Arrangements for thermal management for gas 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
- H01S3/02—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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a slab-type carbon dioxide glass tube laser, which comprises a core discharge cavity, wherein the core discharge cavity is sequentially coated by an inner glass tube and an outer glass tube, two ends of the inner glass tube are respectively provided with a positive electrode discharge electrode and a negative electrode discharge electrode, and two ends of the inner glass tube, which are close to the positive electrode discharge electrode and the negative electrode discharge electrode, are respectively provided with an air return disc and a fixed disc; under the condition that the length is not increased, the discharge volume is increased, the working gas pressure is high, the obtained saturated light intensity is higher, namely, the laser gain is increased, the power output of the laser is approximately in direct proportion to the size of the laser gain and is in direct proportion to the saturated light intensity, so that higher laser output power can be obtained, the production cost of a laser tube is reduced, and under the condition of outputting the same laser power, the length of the strip type carbon dioxide glass tube laser is shorter, and the requirements on transportation and installation environments are lower.
Description
Technical Field
The invention relates to a slab type carbon dioxide glass tube laser, and belongs to the technical field of industrial production.
Background
The laser tube is commonly called a glass sealed-off type CO2 laser because the structure is formed by packaging a glass tube.
The traditional sealed carbon dioxide glass tube laser adopts a multilayer sleeve type structure and mainly comprises a discharge tube, a water-cooling tube, a gas storage tube, a gas return tube, a resonant cavity mirror, an electrode and the like. The discharge tube in the triple-walled sleeve is a critical component in a sealed-off carbon dioxide glass tube laser, which substantially determines the characteristics of the laser output. The diameter of the discharge tube of the traditional carbon dioxide glass tube laser is generally 8-10 mm, and the length of the discharge tube is in direct proportion to the output power of the laser. Therefore, to obtain high output power, the length of the discharge tube must be increased, which increases the total length of the laser, and increases the production cost, transportation cost, installation and use cost of the laser.
Disclosure of Invention
The invention provides a slab-type carbon dioxide glass tube laser which is used for overcoming the defect that the output power of the laser is difficult to improve on the premise of not increasing the length of the laser in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention discloses a lath type carbon dioxide glass tube laser, which comprises a core discharge cavity, wherein the core discharge cavity is sequentially coated by an inner glass tube and an outer glass tube, and both ends of the inner glass tube are respectively provided with a positive electrode discharge electrode and a negative electrode discharge electrode;
the two ends of the inner glass tube are respectively provided with an air return disc and a fixed disc near the anode discharge electrode and the cathode discharge electrode;
a first end face flange and a second end face flange are respectively arranged at two ends of the outer glass tube, the outer side of the first end face flange is connected with a first locking end cover through a fastener, the outer side of the second end face flange is connected with a second locking end cover through a fastener, and a rear end cover and the first end face flange, and a front end cover and the second end face flange are tightly pressed by respectively adjusting locking screws on the first locking end cover and the second locking end cover;
the inner side of the rear end cover is provided with a rear cavity mirror, a first sealing adjusting ring is arranged at the matching position of the rear cavity mirror and the first locking end cover, the inner side of the front end cover is provided with a front cavity mirror, a second sealing adjusting ring is arranged at the matching position of the front cavity mirror and the second locking end cover, an output window sheet is arranged on the outer side of the front cavity mirror, and a window sheet pressing plate is arranged on the outer side of the output window sheet in a matching mode.
Further, one end of the core discharge chamber penetrates through the centers of the air return disks and is welded together, and the other end of the core discharge chamber penetrates through the centers of the fixed disks and is welded together.
Furthermore, the outer glass tube and the inner glass tube are arranged in the same axis with the air return disc.
Furthermore, the water pipe penetrates through the outer glass tube and the inner glass tube.
Furthermore, the air return pipe is sleeved on the outer wall of the inner glass pipe, and one end of the air return pipe is welded with the air return disc.
Further, the core discharge cavity is of a slat type structure, the first discharge flat plate and the second discharge flat plate are arranged in a vertical parallel mode, a first limiting plate and a second limiting plate are arranged at two ends between the first discharge flat plate and the second discharge flat plate respectively, the first discharge flat plate and the second discharge flat plate are welded with the first limiting plate and the second limiting plate to form the core discharge cavity, the planes of the first discharge flat plate and the second discharge flat plate are laser gain area cross sections, and the distance between the first discharge flat plate and the second discharge flat plate is a discharge distance.
Furthermore, the air return disc, the outer glass tube, the inner glass tube and the fixed disc form a gas storage cavity of the lath type carbon dioxide glass tube laser, working gas is filled in the gas storage cavity, the working gas is mixed gas of CO2, He and N2, the high-voltage end of the laser power supply is connected with an anode discharge electrode of the laser, and an electric loop of the laser power supply is connected with a cathode discharge electrode of the laser tube through an ammeter or directly.
Furthermore, cooling water is communicated to fill a water cooling cavity formed by the inner glass tube, the air return disc and the fixed disc, so that water flow can flow in and out in the laser in a double-inlet and double-outlet mode in a circulating mode.
The invention has the beneficial effects that:
(1) compared with the traditional carbon dioxide glass tube laser, the discharge volume is increased under the condition of not increasing the length, namely the laser gain is increased. In addition, the discharge distance is short (generally 1-4 mm), the working gas pressure is high (more than one hundred torr, and dozens of torr are adopted in the glass tube), and the obtained saturated light intensity is higher. The power output of the laser is approximately proportional to the gain of the laser and proportional to the saturation light intensity. Therefore, higher laser output power can be obtained, and the production cost of the laser tube is reduced.
(2) Under the condition of outputting the same laser power, the length of the strip type carbon dioxide glass tube laser is shorter, and the requirements on transportation and installation environments are lower.
(3) The structure form of two inlets and two outlets of cooling water is adopted, the problem that the heat accumulation in the discharge cavity is too fast due to the increase of the discharge volume can be effectively solved, and the stability of the output power is maintained.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a core discharge chamber of the present invention;
fig. 3 is a schematic diagram of the operation of the present invention.
In the figure: 1. a core discharge chamber; 2. a first discharge panel; 3. a second discharge plate; 4. a first limit plate; 5. a second limiting plate; 6. a gas return disc; 7. an outer glass tube; 8. an inner glass tube; 9. a water pipe; 10. an air return pipe; 11. a first end flange; 12. a second end face flange; 13. a positive discharge electrode; 14. a negative discharge electrode; 15. a first locking end cap; 16. a second locking end cap; 17. tightening the screw; 18. a rear end cap; 19. a rear cavity mirror; 20. a first seal adjustment ring; 21. a second seal adjustment ring; 22. fixing the disc; 23. a front end cover; 24. a front cavity mirror; 25. outputting the window sheet; 26. a window press plate; 27. a gas storage cavity; 28. a laser power supply; 29. a water cooling cavity.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
As shown in fig. 1, a slab-type carbon dioxide glass tube laser comprises a core discharge cavity 1, wherein the core discharge cavity 1 is sequentially coated by an inner glass tube 8 and an outer glass tube 7, the left end of the core discharge cavity 1 penetrates through the center of an air return disc 6 and is welded together, the outer glass tube 7 and the inner glass tube 8 are installed on the right side of the air return disc 6 and are coaxial with the air return disc 6, a water pipe 9 is installed on the outer glass tube 7 and the inner glass tube 8, the air return pipe 10 is sleeved on the outer side of the inner glass tube 8, and one end of the air return pipe is welded with the air return disc 6; a first end face flange 11 and a positive electrode discharge electrode 13 are installed on the right side of the air return disc 6, a first locking end cover 15 is installed on the outer side of the first end face flange 11, a rear end cover 18 and the first end face flange 11 are tightly pressed together through an adjusting locking screw 17 on the first locking end cover 15, and a rear cavity mirror 19 and a first sealing adjusting ring 20 are installed on the rear end cover 18.
The right end of the core discharge cavity 1 penetrates through the center of a fixed disc 22 and is welded together, the fixed disc 22 is installed on the right sides of the outer glass tube 7 and the inner glass tube 8, a second end face flange 12 and a negative discharge electrode 14 are installed on the right side of the fixed disc 22, a second locking end cover 16 is installed on the outer side of the second end face flange 12, a front end cover 23 and the second end face flange 12 are pressed together through adjusting set screws 17 on the second locking end cover 16, a front cavity mirror 24 and a second sealing adjusting ring 21 are installed on the left side of the front end cover 23, an output window sheet 25 is installed on the right side of the front end cover 23, and a window sheet pressing plate 26 is installed on the.
As shown in fig. 2, a core discharge cavity 1 of a slab-type carbon dioxide glass tube laser is in a slab-type structure, a first discharge flat plate 2 and a second discharge flat plate 3 are vertically arranged in parallel, a first limiting plate 4 and a second limiting plate 5 are respectively arranged at two ends between the first discharge flat plate and the second discharge flat plate, the first discharge flat plate 2 and the second discharge flat plate 3 are welded with the first limiting plate 4 and the second limiting plate 5 to form the core discharge cavity 1, the planes of the first discharge flat plate 2 and the second discharge flat plate 3 are laser gain area cross sections, and the distance between the first discharge flat plate 2 and the second discharge flat plate 3 is a discharge distance.
As shown in fig. 3, the working principle of a slab-type carbon dioxide glass tube laser is as follows: the air return disc 6, the outer glass tube 7, the inner glass tube 8 and the fixed disc 22 form a gas storage cavity 27 of the lath type carbon dioxide glass tube laser, working gas (mixed gas of CO2, He and N2) is filled in the gas storage cavity 27, the high-voltage end of the laser power supply 28 is connected with the anode discharge electrode 13 of the laser, and the electric loop of the laser power supply 28 is connected with the cathode discharge electrode 14 of the laser tube through an ammeter or directly. Cooling water is communicated to fill a water cooling cavity 29 formed by the inner glass tube 8, the air return disc 6 and the fixed disc 22, so that water flows in the laser in a circulating manner according to the requirement of double-in and double-out; the laser power supply 28 is turned on, and laser light is output from the output louver 25.
The strip type carbon dioxide glass tube laser shortens the discharge distance (generally 1-4 mm), the working gas pressure is high and reaches more than one hundred torr (the traditional glass tube laser is dozens of torr), and therefore higher saturation light intensity is obtained. The output power of the laser is approximately proportional to the laser gain and proportional to the saturation light intensity, and can be calculated by the following formula:
wherein: p-laser output power, t1-cavity output ratio, ISSaturated light intensity, A-gain section cross-sectional area, L-gain section length, G0Small signal gain, a1-cavity loss factor. Therefore, the lath type carbon dioxide glass tube laser can obtain higher laser output power, and the production cost of the laser tube is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A lath type carbon dioxide glass tube laser is characterized by comprising a core discharge cavity, wherein the core discharge cavity is sequentially coated by an inner glass tube and an outer glass tube, and both ends of the inner glass tube are respectively provided with a positive electrode discharge electrode and a negative electrode discharge electrode;
the two ends of the inner glass tube are respectively provided with an air return disc and a fixed disc near the anode discharge electrode and the cathode discharge electrode;
a first end face flange and a second end face flange are respectively arranged at two ends of the outer glass tube, the outer side of the first end face flange is connected with a first locking end cover through a fastener, the outer side of the second end face flange is connected with a second locking end cover through a fastener, and a rear end cover and the first end face flange, and a front end cover and the second end face flange are tightly pressed by respectively adjusting locking screws on the first locking end cover and the second locking end cover;
the inner side of the rear end cover is provided with a rear cavity mirror, a first sealing adjusting ring is arranged at the matching position of the rear cavity mirror and the first locking end cover, the inner side of the front end cover is provided with a front cavity mirror, a second sealing adjusting ring is arranged at the matching position of the front cavity mirror and the second locking end cover, an output window sheet is arranged on the outer side of the front cavity mirror, and a window sheet pressing plate is arranged on the outer side of the output window sheet in a matching mode.
2. The slatted carbon dioxide glass tube laser as claimed in claim 1, wherein one end of the core discharge chamber passes through the center of the gas return disk and is welded together, and the other end passes through the center of the fixed disk and is welded together.
3. The slatted carbon dioxide glass tube laser as claimed in claim 1, wherein the outer and inner glass tubes are coaxially disposed with the air return disc.
4. The slatted carbon dioxide glass tube laser of claim 1, wherein a water tube extends through the outer glass tube and the inner glass tube.
5. The slatted carbon dioxide glass tube laser as claimed in claim 1, wherein the air return tube is sleeved on the outer wall of the inner glass tube and has one end welded to the air return disc.
6. The slatted carbon dioxide glass tube laser as claimed in claim 1, wherein the core discharge cavity is in a slatted structure, the first discharge plate and the second discharge plate are vertically arranged in parallel, and a first limiting plate and a second limiting plate are respectively disposed at two ends between the first discharge plate and the second discharge plate, the first discharge plate and the second discharge plate are welded to the first limiting plate and the second limiting plate to form the core discharge cavity, the planes of the first discharge plate and the second discharge plate are laser gain area cross sections, and the distance between the first discharge plate and the second discharge plate is a discharge distance.
7. The lath type carbon dioxide glass tube laser as claimed in claim 1, wherein the air return disc, the outer glass tube, the inner glass tube and the fixed disc form a gas storage cavity of the lath type carbon dioxide glass tube laser, working gas is filled in the gas storage cavity, the working gas is mixed gas of CO2, He and N2, a high-voltage end of a laser power supply is connected with a positive discharge electrode of the laser, and an electric loop of the laser power supply is connected with a negative discharge electrode of the laser tube through an ammeter or directly.
8. The slatted carbon dioxide glass tube laser as claimed in claim 1, wherein cooling water is introduced to fill a water-cooling chamber formed by the inner glass tube, the air return disc and the fixed disc, so that water flows in and out of the laser in a double-in and double-out manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944635.2A CN111934172A (en) | 2020-09-10 | 2020-09-10 | Lath type carbon dioxide glass tube laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944635.2A CN111934172A (en) | 2020-09-10 | 2020-09-10 | Lath type carbon dioxide glass tube laser |
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| Publication Number | Publication Date |
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| CN111934172A true CN111934172A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010944635.2A Pending CN111934172A (en) | 2020-09-10 | 2020-09-10 | Lath type carbon dioxide glass tube laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11876336B2 (en) | 2021-07-15 | 2024-01-16 | Chengdu Weeson Tech Co., Ltd. | Positive high-voltage laser having super-long discharge tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789559A (en) * | 2010-02-10 | 2010-07-28 | 华中科技大学 | Gas laser |
| CN103606801A (en) * | 2013-11-29 | 2014-02-26 | 中国科学院上海硅酸盐研究所 | Sealing-off type carbon dioxide laser tube controlled in feedback mode |
| CN105375242A (en) * | 2015-11-24 | 2016-03-02 | 大族激光科技产业集团股份有限公司 | Surface treatment method for electrode plates of carbon dioxide laser device and laser device |
| CN212485780U (en) * | 2020-09-10 | 2021-02-05 | 南通斯派特激光科技有限公司 | Lath type carbon dioxide glass tube laser |
-
2020
- 2020-09-10 CN CN202010944635.2A patent/CN111934172A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789559A (en) * | 2010-02-10 | 2010-07-28 | 华中科技大学 | Gas laser |
| CN103606801A (en) * | 2013-11-29 | 2014-02-26 | 中国科学院上海硅酸盐研究所 | Sealing-off type carbon dioxide laser tube controlled in feedback mode |
| CN105375242A (en) * | 2015-11-24 | 2016-03-02 | 大族激光科技产业集团股份有限公司 | Surface treatment method for electrode plates of carbon dioxide laser device and laser device |
| CN212485780U (en) * | 2020-09-10 | 2021-02-05 | 南通斯派特激光科技有限公司 | Lath type carbon dioxide glass tube laser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11876336B2 (en) | 2021-07-15 | 2024-01-16 | Chengdu Weeson Tech Co., Ltd. | Positive high-voltage laser having super-long discharge tube |
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