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Corner medium and compact laser based on corner medium

A laser, compact technology, applied in the field of lasers, can solve the problems of poor beam quality, large beam divergence angle, etc., to achieve the effect of increasing cavity length, compensating beam distortion, and benefiting divergence angle

Pending Publication Date: 2018-02-27
顶扬光电技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems in the above-mentioned prior art, the present invention provides a corner medium and a compact laser based on the corner medium, which are used to solve the problem of large beam divergence angle and low beam quality caused by the compact configuration of the laser. Poor problem to meet the demand for compact, high-performance lasers in laser detection, laser pointing systems

Method used

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  • Corner medium and compact laser based on corner medium
  • Corner medium and compact laser based on corner medium
  • Corner medium and compact laser based on corner medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as image 3 As shown, a compact laser provided by an embodiment of the present invention includes a corner dielectric 1 , a pump source 4 , a two-way total mirror 2 and a two-way half mirror 3 .

[0044] Corner dielectric 1 is Nd:YAG. The corner medium 1 has a light-emitting end face 11 , a reflective end face 12 , and a peripheral wall 13 extending between the light-emitting end face 11 and the reflective end face 12 . The peripheral wall 13 of the corner medium 1 is in the shape of a drum (a drum shape refers to a shape that gradually shrinks smoothly from the middle to both ends).

[0045] The light emitting end surface 11 of the corner medium 1 is a plane. The reflection end surface 12 is a triangular pyramid surface formed by the perpendicular intersection of three total reflection surfaces. The areas of the three total reflection surfaces are equal, and the projection of the apex of the reflective end surface 12 perpendicular to the light-emitting end surfac...

Embodiment 2

[0064] The difference between the second embodiment and the first embodiment is that the two-way total reflection mirror and the two-way half-mirror of the compact laser provided by the embodiment of the present invention are integrated and arranged on the light-emitting end surface of the corner medium. That is, both the total reflection plane and the semi-reflection plane are set close to the light-emitting end face, which can further compress the volume of the laser.

Embodiment 3

[0066] The difference between Embodiment 3 and Embodiment 1 is that the pumping source of the compact laser provided by the embodiment of the present invention is arranged around the peripheral wall of the corner medium. The corner medium of the present invention is extended to be applied to the side pump mode to realize high energy (high power) output, the pump source is coupled into the corner medium from the peripheral wall of the pyramid medium, and the compact space stretching of the laser resonator can still be realized , Beam inhomogeneity and pump thermal effect compensation.

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Abstract

The invention provides a corner medium. The corner medium is provided with a light-out end surface and a reflective end surface which are oppositely arranged and a peripheral wall extending between the light-out end surface and the reflective end surface, wherein the light-out end surface is a flat surface, and the reflective end surface is a triangular pyramid surface formed by three fully-reflective surfaces which perpendicularly intersect. The invention further provides a compact laser. The compact laser comprises the corner medium, a bi-directional fully-reflective mirror and a bi-directional semi-reflective mirror, wherein the bi-directional fully-reflective mirror is provided with a fully-reflective flat surface which is arranged opposite to the light-out end surface, the bi-directional semi-reflective mirror is provided with a semi-reflective flat surface which is arranged opposite to the light-out end surface, and the fully-reflective flat surface, the semi-reflective flat surface and the reflective end surface form a laser resonant cavity. The corner medium serves as a gain medium of the laser, and based on the premise that the spatial length is not increased, the length of the resonant cavity is effectively increased, which is beneficial to outputting at a small divergence angle; meanwhile, by means of beam reflection compensating in the corner medium, beam distortion, optical axis drifting and beam quality decline caused by the unevenness of pumping are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a corner medium and a compact laser based on the corner medium. Background technique [0002] The laser is the most complex part of the optical mechanism in the laser system. The performance and configuration of the laser directly determine the optical mechanism configuration, technical system and space allocation of other components of the laser system. In applications such as lidar, laser ranging, and target indication, compact lasers are a long-term pursuit of researchers. [0003] The small laser system integrated by the compact laser can be directly integrated with the photoelectric system, and it can be mounted on platforms such as individual soldiers, vehicles, helicopters, and drones for ranging, height measurement, and guidance. stable demand. In applications with high requirements for laser system performance indicators such as range measurement, lasers are required to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/06H01S3/0941
CPCH01S3/0606H01S3/0615H01S3/0623H01S3/0941
Inventor 孟冬冬董涛
Owner 顶扬光电技术(上海)有限公司