CN-121983835-A - Directional heat dissipation packaging tube, cladding light stripper and preparation method thereof

CN121983835ACN 121983835 ACN121983835 ACN 121983835ACN-121983835-A

Abstract

The invention belongs to the technical field of laser devices, and discloses a directional heat dissipation packaging tube, a cladding light stripper and a packaging method thereof. The heat dissipation packaging tube comprises a glass tube body, an anti-reflection layer and a directional scattering part, wherein the glass tube body is provided with an inner peripheral surface and an outer peripheral surface which are oppositely arranged, the directional scattering part is formed in a partial area of the outer peripheral surface, and the directional scattering part is distributed in the middle section of the glass tube body along the axial direction of the glass tube body and is asymmetrically distributed in the circumferential direction of the outer peripheral surface and used for scattering and guiding out light transmitted through the glass tube body to a specific direction. According to the invention, the reflection reducing layer is coated on the inner peripheral surface of the packaging tube, so that the light transmittance is remarkably improved, the light reflection and absorption loss are reduced, the internal photo-thermal accumulation is restrained, and the directional scattering parts asymmetrically distributed in the middle section of the outer peripheral surface can scatter and guide transmitted light in a specific direction and are matched with an external cooling system, so that the heat dissipation efficiency is greatly improved.

Inventors

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Assignees

四川思创激光科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. A directional heat dissipation package for a high power laser device, comprising: A glass tube body, wherein the glass tube body is provided with a plurality of glass tubes, the glass tube body is provided with an inner peripheral surface and an outer peripheral surface which are oppositely arranged; An anti-reflection layer coated on the inner peripheral surface for improving the transmittance of light passing through the glass tube body, and A directional scattering portion formed in a partial region of the outer peripheral surface; the directional scattering parts are distributed at the middle section of the glass tube body along the axial direction of the glass tube body and are asymmetrically distributed in the circumferential direction of the outer peripheral surface, and the directional scattering parts are used for scattering and guiding out light rays transmitted through the glass tube body to a specific direction.
2. The directed heat sink packaging tube of claim 1, wherein the anti-reflective layer comprises a sol-gel cured film layer of nano-silica particles and the anti-reflective layer is hydrophobic.
3. The directed heat sink packaging tube of claim 1, wherein the directed scattering portion comprises an array of microstructures formed by laser etching.
4. A directional heat dissipating packaging tube in accordance with claim 3 wherein said directional scattering portion has a footprint of not less than 1/6 of the total surface area of said outer peripheral surface.
5. The directional heat dissipation packaging tube as recited in claim 1, wherein the areas of the outer peripheral surface at both ends of which the directional scattering portions are not provided are smooth sealing areas.
6. A cladding light stripper comprising the directional heat dissipation packaging tube as recited in any one of claims 1-5, further comprising: The optical fiber penetrates through the glass tube body, and the part of the optical fiber, which is positioned in the glass tube body, is a bare fiber section without a coating layer; The two ends of the glass tube body are filled with packaging glue, and the optical fibers are coaxially fixed with the glass tube body through the packaging glue.
7. A packaging method of a cladding light stripper, comprising: setting an anti-reflection layer on the inner peripheral surface of the glass tube, and curing; carrying out local physical etching on a preset area of the peripheral surface of the glass tube to form a directional scattering part; Penetrating the optical fiber subjected to surface etching treatment into the glass tube, keeping the optical fiber in a suspended state, injecting packaging glue into the end spaces at two ends of the glass tube, and curing to enable the packaging glue to seal the inner cavity of the glass tube.
8. The packaging method of claim 7, wherein the disposing an anti-reflection layer comprises: The glass tube is immersed in the anti-reflection liquid by adopting a pulling method, taken out, vertically placed in an environment of 120 ℃ and dried for 3 hours.
9. The method of claim 7, wherein forming the directional scattering portions comprises performing laser etching in a region between 1cm from each of both ends of the glass tube by rotating the glass tube a plurality of times and etching in parallel until the etched region reaches a predetermined circumferential range.
10. The method of claim 7, wherein the encapsulating compound has an injection length of 5-6mm and is cured by ultraviolet light.

Description

Directional heat dissipation packaging tube, cladding light stripper and preparation method thereof Technical Field The invention belongs to the technical field of laser devices, and particularly discloses a directional heat dissipation packaging tube, a cladding light stripper and a packaging method thereof. A directional heat dissipation package for a high power laser device, comprising: A glass tube body, wherein the glass tube body is provided with a plurality of glass tubes, the glass tube body is provided with an inner peripheral surface and an outer peripheral surface which are oppositely arranged; An anti-reflection layer coated on the inner peripheral surface for improving the transmittance of light passing through the glass tube body, and A directional scattering portion formed in a partial region of the outer peripheral surface; the directional scattering parts are distributed at the middle section of the glass tube body along the axial direction of the glass tube body and are asymmetrically distributed in the circumferential direction of the outer peripheral surface, and the directional scattering parts are used for scattering and guiding out light rays transmitted through the glass tube body to a specific direction. Background In the packaging field of high-power laser devices, the conventional packaging structure generally adopts a common glass tube to fix an optical fiber through packaging adhesive. However, the common glass tube has limited light transmittance, and the cladding leakage light can generate higher proportion of reflection and absorption when being emitted to the inner wall of the glass tube, so that serious photo-thermal accumulation is generated in the glass tube, and further the ageing and failure of the packaging adhesive are accelerated. Meanwhile, as the surface of the common glass tube is smooth, the light rays meet the total reflection condition in the tube wall, so that the leakage of energy in the tube body has randomness and isotropy. The random leakage characteristic ensures that heat is uniformly distributed on the surface of the glass tube, and the heat cannot be matched with an externally oriented cooling device in a high-efficiency heat exchange manner. Therefore, the prior art has the coupling defects that the internal heat generation is high and the external heat dissipation path cannot be guided directionally, and severely restricts the heat dissipation efficiency and the long-term operation reliability of the high-power laser device. Disclosure of Invention In view of the above, the present invention provides a directional heat dissipation packaging tube, a cladding light stripper and a packaging method thereof, so as to solve the above-mentioned problems. The specific implementation mode of the invention is as follows: A directional heat dissipation packaging tube comprising: The glass tube body is provided with an inner peripheral surface and an outer peripheral surface which are oppositely arranged; an antireflection layer coated on the inner peripheral surface for improving light transmittance of the glass tube body, and A directional scattering portion formed in a partial region of the outer peripheral surface; the directional scattering parts are distributed in the middle section along the axial direction of the glass tube body and are asymmetrically distributed in the circumferential direction of the outer peripheral surface, and are used for scattering and guiding out light transmitted through the glass tube body to a specific direction. As an alternative, the anti-reflective layer comprises a sol-gel cured film layer of nano-silica particles, and the anti-reflective layer has hydrophobicity. As an alternative, the directional scattering portion comprises an array of microstructures formed by laser etching. Alternatively, the directional scattering portion has a coverage area of not less than 1/6 of the total surface area of the outer peripheral surface. As an alternative, the area where the directional scattering portions are not provided at both ends of the outer peripheral surface is a smooth sealing area. On the other hand, the invention also provides a cladding light stripper, which comprises the directional heat dissipation packaging tube, and further comprises, as an optional way: The optical fiber penetrates through the glass tube body, and the part of the optical fiber, which is positioned in the glass tube body, is a bare fiber section without a coating layer; The two ends of the glass tube body are filled with packaging glue, and the optical fibers are coaxially fixed with the glass tube body through the packaging glue. On the other hand, the invention also provides a packaging method of the cladding light stripper, which is applied to the cladding light stripper and comprises the following steps of: setting an anti-reflection layer on the inner peripheral surface of the glass tube, and curing; Carrying out local physical etching on a prese