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Non-stable cavity type output cavity mirror mounting structure without transverse fulcrum bar

An output cavity mirror and installation structure technology, applied in the field of lasers, can solve problems affecting application, laser far-field spot distortion, etc., and achieve the effects of accelerating heat dissipation, ensuring stable output, and improving cooling effects.

Inactive Publication Date: 2012-09-12
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a structure inevitably has one or more struts placed horizontally in the laser beam section, which not only shields and divides the laser beam, but also distorts the laser far-field spot due to diffraction and affects the application.

Method used

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  • Non-stable cavity type output cavity mirror mounting structure without transverse fulcrum bar
  • Non-stable cavity type output cavity mirror mounting structure without transverse fulcrum bar
  • Non-stable cavity type output cavity mirror mounting structure without transverse fulcrum bar

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Effect test

Embodiment 1

[0022] Such as figure 2 As shown, the output cavity mirror installation structure of the unstable cavity without transverse struts of the present invention includes an output window 3, a small convex spherical total reflection mirror 2, a heat conducting rod 7, and a window cover 5; the output window 3 adopts a window cover 5 It is sealed and installed at the end of the laser working chamber 4 near the small convex spherical total reflection mirror 2, the window gland 5 can be circular or other shapes; the heat conducting rod 7 passes through the through hole on the output window 3 and The through hole is sealed and connected with the output window 3 (it can be sealed by gluing), and the small convex spherical total reflection mirror 2 is made on the end of the heat conducting rod 7 located in the laser working cavity 4, and has an integral structure with the heat conducting rod 7 .

Embodiment 2

[0024] Such as image 3 As shown, the output cavity mirror installation structure of the unstable cavity without transverse struts of the present invention includes an output window 3, a small convex spherical total reflection mirror 2, a heat conducting rod 7, and a window cover 5; the output window 3 adopts a window cover 5 It is sealed and installed at the end of the laser working chamber 4 close to the small convex spherical total reflection mirror 2, and the window gland 5 is circular; the heat conducting rod 7 passes through the through hole on the output window 3 and is connected with the output at the through hole. The window 3 is hermetically connected (it can be sealed by gluing), and the small convex spherical total reflection mirror 2 is made on the end of the heat conducting rod 7 located in the laser working cavity 4, and is integrally structured with the heat conducting rod 7; on the circumference of the window gland 5 A plurality of air inlet nozzles 6 are even...

Embodiment 3

[0026] Such as Figure 4 As shown, the output cavity mirror installation structure of the unstable cavity without lateral struts of the present invention is mainly composed of a small convex spherical total reflection mirror 2, an output window 3, a window gland 5, an air blowing cylinder 8 and a heat conducting rod 7. The center of the output window 3 is processed with a round through hole, the small convex spherical total reflection mirror 2 is made on the front end of the front part 71 of the heat conducting rod (that is, the part located in the working cavity of the laser), and the rear end of the front part 71 of the heat conducting rod passes through the output window The round through hole on 3 and the rear part 72 of the heat conduction rod (that is, the part located outside the laser working chamber 4) are sealed and connected to form an integrated component (the connection can be made by screw connection, etc., and the seal can be used in the contact between the small...

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Abstract

The invention relates to a non-stable cavity type output cavity mirror mounting structure without a transverse fulcrum bar. The structure comprises an output window, a small convex spherical total reflection mirror, a heat conducting bar and a window gland; the output window is hermetically installed at the end part (of a laser working cavity) close to the small convex spherical total reflection mirror through the window gland; the heat conducting bar is passed through a through hole in the output window and is hermetically connected with the output window at the through hole, and the small convex spherical total reflection mirror is processed at the end part located in the laser working cavity of the heat conducting bar. According to the invention, a laser beam is output outside the laser working cavity from the outer edge of the small convex spherical total reflection mirror without being shielded to guarantee the integral and non-distortion shape of the laser spot. Meanwhile, the heat absorbed by the small convex spherical total reflection mirror can be quickly conducted to the outer side of the laser working cavity through the heat conducting bar, thus effectively cooling the small convex spherical total reflection mirror and guaranteeing the stable output of the laser.

Description

technical field [0001] The invention belongs to the technical field of lasers, and relates to a high-power laser with an unstable optical resonant cavity, in particular to a mounting structure for an output cavity mirror of an unstable cavity without transverse struts. Background technique [0002] Optical resonators are one of the necessary conditions for obtaining laser output, and are generally divided into three types: stable cavity, unstable cavity and critical cavity. For a laser with a large gain, in order to obtain a low-order mode high-beam quality laser output, an unstable cavity type is required. The unstable cavity has various cavity structures. In high-power lasers, the positive branch virtual confocal unstable cavity type is usually used. The structure is as follows: figure 1 As shown, an optical resonant cavity is formed by a large metal concave spherical total reflection mirror 1 and a small metal convex spherical total reflection mirror 2 , and an optical g...

Claims

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Application Information

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IPC IPC(8): H01S3/081H01S3/04
Inventor 邵春雷李殿军李世明杨贵龙郭劲
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI