Cassegrain type light beam synthesizer with high duty ratio

A Cassegrain type and beam synthesis technology, which is applied in optics, optical components, instruments, etc., can solve the problems of compact structure, low beam duty ratio, and strict requirements on the size of supporting devices, and achieve the effect of compact structure

Active Publication Date: 2011-10-12
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

At present, the method of directly splicing the output collimation systems of each beam is generally used to realize the beam combination. Since there is a lens support device in the collimation output system of a single beam, the beam duty ratio is low during direct

Method used

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  • Cassegrain type light beam synthesizer with high duty ratio
  • Cassegrain type light beam synthesizer with high duty ratio
  • Cassegrain type light beam synthesizer with high duty ratio

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Embodiment Construction

[0042] Since both the incident reflector and the exit reflector are plane mirrors, the beam combiner does not change the width of the beam (set as w), but only compresses the distance between the beams. The reflectors of the beam combining device are arranged according to a rotating parabola to form a Cassegrain beam conversion system. Each outgoing reflector is ground and polished on a cone whose surface is a rotating paraboloid; each incident reflector is a separate plane reflector, and its position and angle are determined by the corresponding outgoing reflector. The specific implementation plan is as follows:

[0043] 1. According to the beam width w and the number of beam paths N, make a reflector substrate whose surface shape is a rotating paraboloid. Place the substrate in the three-dimensional right-angled right-handed system O-XYZ so that its symmetry axis coincides with the X axis, and the apex is located at at the origin of the coordinates. Among them, the distanc...

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Abstract

The invention provides a cassegrain type light beam synthesizer with high duty ratio, and the synthesizer provided by the invention can be used for realizing the high duty ratio splicing of multiple paths of parallel light beams. In the design method of the compact light beam synthesizer provided by the invention, the geometric characteristics of revolution paraboloids and the structural features of a cassegrain light beam transformation system are combined; and the main technical points are as follows: the synthesizer comprises two reflectors, namely an independent incidence reflector and an integrated emergence reflector; the two reflectors are ranked into the cassegrain light beam transformation system in the space; each reflector is a plane mirror, and the centers of the reflectors are ranked on the two revolution paraboloids which have the same axis, the same focal point and the same direction; and the normal direction of the reflector surfaces is the normal direction at which the revolution paraboloids are positioned. The beam contraction ratio and duty ratio of the synthesizer which adopts the design provided by the invention have the clear and accurate mathematic description; and the synthesizer provided by the invention can be widely applied to the fields of the coherence synthesizing and non-coherence synthesizing of multiple light beams and the other synthesizing of light beams and has greater application prospects.

Description

technical field [0001] The invention provides a design method of a multi-beam, high-duty ratio, and compact beam combiner, which can realize high-duty-ratio splicing of multiple parallel beams. The design method of this compact beam combiner can be widely used in the coherent combination, non-coherent combination of multi-beams and other fields involving beam combination. Background technique [0002] With the continuous expansion of the application field of laser technology, the requirements for laser output power and beam quality are getting higher and higher. In many fields, the power and brightness of a single laser can no longer meet the application requirements. Coherent and incoherent combination of multiple laser beams is an important way to improve laser brightness and power. In the coherent combination and incoherent combination of light beams, the duty cycle of the output beam arrangement has a very important influence on the final combination effect. Here, the...

Claims

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Application Information

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IPC IPC(8): G02B27/09
Inventor 许晓军韩凯刘泽金张煊喆
Owner NAT UNIV OF DEFENSE TECH
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