Rotary double blazed grating based two dimensional light beam deflection method

Abstract

The invention discloses a rotary double blazed grating based two dimensional light beam deflection method. Two dimensional deflection of outgoing light beams is controlled through independent rotation of two blazed gratings around an axis. In a process that the double blazed gratings control the deflection of the two dimensional light beams, straightening laser light source irradiates to a first blazed grating and then passes through the second blazed grating. The two blazed gratings rotate independently around an axis, so that two dimensional deflection of the outgoing light beams is realized. The deflection angle and the azimuth angle of the outgoing light beams can be obtained according to rotation angles of the two blazed gratings. The method has characteristics of low system weight, small light beam energy loss, high deflection precision and the like.

Description

technical field [0001] The invention belongs to the technical field of beam control, and in particular relates to a two-dimensional beam deflection method based on rotating double blazed gratings. Background technique [0002] Beam deflection control technology refers to the technology of precisely controlling the transmission direction of the laser beam by controlling the wavefront of the laser beam. It plays an indispensable role in the fields of laser radar, laser communication, and optical storage. Since the last century, many breakthroughs have been made in the continuous innovation of beam deflection technology, and it has experienced the development process from traditional mechanical devices to new mechanical devices, micromechanical devices and inertialess mechanical devices. Among them, mechanical beam deflection technology relies on mechanical equipment such as universal joints and steering tables to achieve beam deflection by changing the direction of the optical...

AI Technical Summary

Problems solved by technology

However, the deflection angle range of this method is related to the wedge angle of the prism. The larger the deflection angle requires the larger the wedge angle of the prism, and the volume and weight of the prism are large. It is difficult to realize random orientation and has a mechanical inertia mechanism. When forming an array, The duty cycle of the array beam is not high;

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