CN112234418A - Packaging shell of cladding power stripper - Google Patents
Packaging shell of cladding power stripper Download PDFInfo
- Publication number
- CN112234418A CN112234418A CN202011436283.6A CN202011436283A CN112234418A CN 112234418 A CN112234418 A CN 112234418A CN 202011436283 A CN202011436283 A CN 202011436283A CN 112234418 A CN112234418 A CN 112234418A
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- CN
- China
- Prior art keywords
- light
- cavity
- shell body
- power stripper
- package
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- 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.)
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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
- H01S3/05—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
- H01S3/06704—Housings; Packages
-
- 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
- H01S3/0401—Arrangements for thermal management of optical elements being part of laser resonator, e.g. windows, mirrors, lenses
Abstract
The invention relates to a packaging shell of a cladding power stripper, belonging to the technical field of optical fiber lasers, comprising a shell body and a cold plate positioned outside the shell body, wherein a cavity is arranged in the shell body, air is filled in the cavity, the cavity wall of the cavity, which is close to the cold plate, is used as a light absorption surface, the cavity wall of the cavity, which is far away from the cold plate, is used as a light reflection surface, a bare fiber positioned in the cavity strips stray light, one part of the stray light is directly transmitted to the light absorption surface and absorbed, and the other part of the stray light is reflected to the light absorption surface and absorbed through the light reflection surface. Can effectively promote heat radiating area, further reduce the temperature of shell body, simple structure, economic benefits is high.
Description
Technical Field
The invention belongs to the technical field of fiber lasers, and particularly relates to a packaging shell of a cladding power stripper.
Background
The high-power optical fiber laser has wide application in the fields of national defense, industry, scientific research and the like. Pursuing higher beam quality has been a major goal and trend in the research and development of high power lasers. The level of fiber optics is critical to the development of fiber lasers, where a Cladding Light/Power Stripper (CPS) is the typical fiber optic.
The working principle of the CPS is as follows: the double-clad optical fiber section inside the CPS is stripped to be bare, stray light (including cladding light, pumping light, amplified spontaneous emission light and the like) generated when the laser operates is directly scattered outwards and is not gathered in the optical fiber cladding, and the stray light is scattered to the wall of the CPS shell cavity and absorbed by the wall of the CPS shell cavity to be converted into heat. If the heat absorbed by the wall of the CPS shell cavity cannot be dissipated in time, the heat can cause severe temperature rise in the whole packaging shell, the heat effect of the bare fiber can reduce the beam quality of the laser, and even the heat is conducted to the coating layer to burn the optical fiber. In addition, the temperature of the housing can be conducted to the adjacent environment, adversely affecting other fibers or devices.
Disclosure of Invention
The inventors found in long-term practice that: the wall of the existing CPS cavity is blackened, so that the whole wall of the cavity is a heat source, and the wall far away from a cold plate has the problems of large thermal resistance, poor heat dissipation capability and the like, so that the temperature of the whole CPS shell is high. In order to solve the above problems, a package casing for a clad power stripper has been proposed.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a cladding power stripper encapsulation casing, includes shell body and is located the cold drawing in the shell body outside, the inside cavity that is equipped with of shell body, the cavity intussuseption is filled with the air, and the cavity wall that the cavity is close to the cold drawing is as the light absorption face, and the cavity wall that the cavity kept away from the cold drawing is as the light reflex surface, and the bare fiber that is located the cavity peels off miscellaneous astigmatism, and partly stray light directly transmits to the light absorption face and is absorbed, and another part stray light is reflected to the light absorption face and is absorbed through the light reflex surface.
Preferably, the light absorbing surface is subjected to a blackening treatment.
Preferably, the light absorbing surface is plated with black nickel, black chromium or tin-nickel alloy.
Preferably, the light reflecting surface is coated with a reflecting film.
Preferably, the light reflecting surface is coated with a dielectric film, silver or gold.
Preferably, the light reflecting surface is provided with a reflector.
Preferably, the light absorbing surface is roughened.
Preferably, the light absorbing surface and the light reflecting surface are provided as a flat surface or a curved surface.
Preferably, the longitudinal section of the cavity is in a shape similar to a circle, the cavity wall on the bottom surface of the cavity is a light absorption surface, the cavity wall on the top surface is a light reflection surface, and the light absorption surface and the light reflection surface are both curved surfaces.
Preferably, the longitudinal section of the cavity is rectangular, the cavity wall at the bottom surface is a light absorption surface, the cavity walls at the side surface and the top surface are light reflection surfaces, that is, the light absorption surface and the light reflection surface are both flat surfaces.
Preferably, the longitudinal section of the cavity is semicircular, the cavity wall at the bottom surface is a light absorption surface, the cavity walls at the side surface and the top surface are light reflection surfaces, that is, the light absorption surface is a plane, and the light reflection surface is a curved surface.
The invention has the beneficial effects that:
divide the chamber wall into light absorption face and light reflex face, absorb the stray light that bare fiber stripped off by the light absorption face, simultaneously, because the distance of light absorption face and cold drawing shortens by a wide margin, the thermal resistance is showing and is reducing, is favorable to the controlled temperature, improves the radiating efficiency, reduces the temperature of shell body, in addition, through the area that increases the light absorption face, can effectively promote heat radiating area, further reduces the temperature of shell body, simple structure, economic benefits is high.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic longitudinal cross-section of FIG. 1;
FIG. 3 is a schematic diagram of a structure in which the longitudinal section of the cavity is similar to a circle;
fig. 4 is a schematic diagram of a structure in which the longitudinal section of the cavity is rectangular.
In the drawings: 1-shell body, 2-optical fiber containing coating layer, 3-bare fiber, 4-cavity wall, 5-cavity, 6-light absorption surface and 7-light reflection surface.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 3, a cladding power stripper encapsulation shell includes a shell body 1 and a cold plate located outside the shell body, a cavity 5 is provided inside the shell body 1, the cavity 5 is filled with air, an optical fiber 2 containing a coating layer is located outside the shell body 1, and a bare fiber 3 is located inside the shell body 1.
The cavity 5 is close to the cavity wall of the cold plate and serves as a light absorption surface 6, and the cavity wall of the cavity 5 far from the cold plate and serves as a light reflection surface 7, that is, the cavity wall 4 is divided into two parts, one part serves as the light absorption surface 6, and the other part serves as the light reflection surface 7. When the cold plate is located below the shell body 1, the lower surface of the cavity wall 4 is a light absorption surface 6, and the upper surface of the cavity wall 4 is a light reflection surface 7. A part of stray light separated from the bare fiber 3 is directly transmitted to the light absorption surface 6 and absorbed, and the other part of stray light is reflected by the light reflection surface 7 to the light absorption surface 6 and absorbed. The light absorption surface 6 absorbs light to generate heat as a heat source, and meanwhile, as the distance between the heat source and the cold plate is greatly shortened, the thermal resistance is remarkably reduced, which is beneficial to controlling the temperature, improving the heat dissipation efficiency and reducing the temperature of the shell body 1. In addition, by increasing the area of the light absorption surface 6, the heat dissipation area can be effectively increased, and the temperature of the case body 1 can be further reduced.
Specifically, the light absorption surface 6 is blackened, and preferably, the light absorption surface 6 is plated with black nickel, black chromium or tin-nickel alloy. Meanwhile, the light absorption surface 6 can be subjected to roughening treatment. The light reflecting surface 7 is plated with a reflecting film. Preferably, the light reflecting surface 7 is coated with a dielectric film, silver or gold. In addition, in other embodiments, the light reflecting surface 7 may be provided with a mirror.
Taking an aluminum shell body as an example, the outer dimension of the shell body 1 is 100mm (length) × 30mm (width) × 20mm (height), the longitudinal section of the cavity 5 is circular, the cavity wall 4 is cylindrical with the length of 80mm and the diameter of 10mm, the cavity 5 is concentric with the shell body 1, the total heat load is 500W, and the bottom of the shell body 1 is tightly attached to a cold plate at 20 ℃. In the case of the complete blackening treatment of the chamber wall 4, the maximum temperature of the shell body 1 at the steady state was 34.9 ℃. The lower surface of the cavity wall 4 is set as a light absorption surface 6, the upper surface is set as a light reflection surface 7, the light absorption surface 6 and the light reflection surface 7 are uniformly divided into the cavity wall along the circumferential direction of the longitudinal section of the cavity 5, and the highest temperature of the shell body 1 in a steady state is 28.4 ℃. That is, the present invention more easily reduces the temperature rise of the case body 1 compared to the prior art.
Example two:
as shown in fig. 4, the same parts of this embodiment as those of the first embodiment are not described again, except that:
the cavity wall 4 is designed to be 80mm (length) 20mm (width) 10mm (height) cuboid, namely the longitudinal section of the cavity 5 is rectangular, the cavity wall at the bottom surface of the cavity 5 is a light absorption surface 6, the cavity walls at the side surface and the top surface of the cavity 5 are light reflection surfaces 7, namely only the bottom surface of the cavity wall is blackened to absorb light, and the highest temperature of the shell body 1 in a steady state is 26.3 ℃. That is, compared with the prior art, the invention can significantly reduce the temperature rise of the CPS shell body 1, and the reduction amplitude is as high as 58%.
Furthermore, in other embodiments, the longitudinal section of the cavity 5 may also be semicircular, elliptical or semi-elliptical. That is, the light absorbing surface 6 and the light reflecting surface 7 may be provided as a flat surface or a curved surface.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (8)
1. The utility model provides a cladding power stripper encapsulation casing, includes shell body and the cold drawing that is located the shell body outside, the inside cavity that is equipped with of shell body, its characterized in that, the cavity intussuseption is filled with the air, and the cavity wall that the cavity is close to the cold drawing is as the light absorption face, and the cavity wall that the cavity kept away from the cold drawing is as the light reflection face, and the bare fiber that is located the cavity peels off stray light, and partly stray light directly transmits to the light absorption face and is absorbed, and another part stray light is reflected to the light absorption face and is absorbed through the light reflection face.
2. The cladding power stripper package of claim 1, wherein the light absorbing face is blackened.
3. The clad power stripper package casing of claim 2, wherein the light absorbing surface is plated with black nickel, black chrome, or tin-nickel alloy.
4. The cladding power stripper package of claim 1, wherein the light reflective surface is coated with a reflective film.
5. The clad power stripper package housing of claim 4, wherein the light reflecting surface is coated with a dielectric film, silver, or gold.
6. The cladding power stripper package of claim 1, wherein the light reflecting surface is provided with a mirror.
7. The cladding power stripper package of any of claims 2-6, wherein the light absorbing surface is roughened.
8. The cladding power stripper package of claim 7, wherein the light absorbing surface and the light reflecting surface are arranged as a plane or a curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436283.6A CN112234418A (en) | 2020-12-11 | 2020-12-11 | Packaging shell of cladding power stripper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436283.6A CN112234418A (en) | 2020-12-11 | 2020-12-11 | Packaging shell of cladding power stripper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112234418A true CN112234418A (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011436283.6A Pending CN112234418A (en) | 2020-12-11 | 2020-12-11 | Packaging shell of cladding power stripper |
Country Status (1)
| Country | Link |
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| CN (1) | CN112234418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117111204A (en) * | 2023-10-24 | 2023-11-24 | 中国工程物理研究院激光聚变研究中心 | Optical fiber, cladding power stripper and optical fiber laser |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140211818A1 (en) * | 2013-01-28 | 2014-07-31 | Kai-Chung Hou | Cladding light stripper and method of manufacturing |
| US20190146159A1 (en) * | 2017-11-10 | 2019-05-16 | National Chung Shan Institute Of Science And Technology | Optical housing for high power fiber components |
| CN110646885A (en) * | 2019-07-01 | 2020-01-03 | 西安中科汇纤光电科技有限公司 | Optical fiber cladding stripper and manufacturing method thereof |
| CN111431024A (en) * | 2020-04-29 | 2020-07-17 | 中国工程物理研究院总体工程研究所 | Airborne integrated air-cooled fiber cladding power stripper |
-
2020
- 2020-12-11 CN CN202011436283.6A patent/CN112234418A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140211818A1 (en) * | 2013-01-28 | 2014-07-31 | Kai-Chung Hou | Cladding light stripper and method of manufacturing |
| US20190146159A1 (en) * | 2017-11-10 | 2019-05-16 | National Chung Shan Institute Of Science And Technology | Optical housing for high power fiber components |
| CN110646885A (en) * | 2019-07-01 | 2020-01-03 | 西安中科汇纤光电科技有限公司 | Optical fiber cladding stripper and manufacturing method thereof |
| CN111431024A (en) * | 2020-04-29 | 2020-07-17 | 中国工程物理研究院总体工程研究所 | Airborne integrated air-cooled fiber cladding power stripper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117111204A (en) * | 2023-10-24 | 2023-11-24 | 中国工程物理研究院激光聚变研究中心 | Optical fiber, cladding power stripper and optical fiber laser |
| CN117111204B (en) * | 2023-10-24 | 2024-03-19 | 中国工程物理研究院激光聚变研究中心 | Optical fiber, cladding power stripper and optical fiber laser |
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Application publication date: 20210115 |
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