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Full internal reflection-refraction laser beam converter

A total internal reflection and laser beam technology, applied in the field of converters, can solve the problems of low beam expansion magnification, low transmission efficiency, and difficult processing, and achieve the effects of small energy loss, high transmission efficiency, and low price

Inactive Publication Date: 2007-09-12
NANKAI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to disclose a new total internal reflection-refraction laser beam converter, which overcomes the defects of low beam expansion magnification, low transmission efficiency, difficult processing, high price, etc. existing in the prior art.

Method used

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  • Full internal reflection-refraction laser beam converter
  • Full internal reflection-refraction laser beam converter
  • Full internal reflection-refraction laser beam converter

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Embodiment Construction

[0031] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0032] The processing of the total internal reflection-refraction laser beam converter is relatively simple, and two methods can be used, the melting method and the inversion method. The material is glass or plastic that is transparent to the incident light. The refractive index of the material we choose is n ε = 1.5.

[0033] The schematic diagram of the shape and structure of the converter is shown in Figure 1. When the tip is the incident end and the circular surface is the exit end, it acts as a beam expander, otherwise it acts as a beam shrinker. The propagation principle of both the beam expander and the beam reducer converter is based on the principle of total internal reflection-refraction. Due to the reversibility of light, here we take the compression law of the converter for light beams as an example. Assuming that a parallel laser be...

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Abstract

The present invention relates to laser beam shaping and coupling converter, especially laser beam expander (or reducer) to increase (or decrease) the diameter of laser beam, and belongs to the field of laser beam shaping and coupling technology. It is one cone transparent to incident light and features that its point angle and the incident light direction determine its function, its circle size depends on the incident laser diameter or outgoing laser diameter and the length is then determined. The converter has simple structure, low cost and high magnification, and may be used widely in laser beam diameter changing application.

Description

technical field [0001] The invention relates to a converter for shaping and coupling a laser beam emitted by a laser, especially a so-called beam expander (or beam reducer) that expands or compresses the diameter of the laser beam so that it can be used more widely. The invention belongs to the technical field of laser beam shaping and coupling. Background technique [0002] As we all know, the laser beam emitted from the laser often has a certain divergence angle and aperture. It is difficult to meet many current applications without some shaping and coupling measures, and the beam expander (or beam reducer) through the The diameter of the laser beam is expanded or compressed to make it more widely used, so the design and use of this type of converter is particularly important. For example, in some laser emission systems, it is necessary to use a beam expander to expand the diameter of the laser beam, thereby compressing the divergence angle of the beam to improve the emis...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09G02B27/10G02B17/08H01S3/00
Inventor 郜洪云傅汝廉
Owner NANKAI UNIV
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