A method of array beam deflection based on rotating double blazed grating

Abstract

The invention discloses an array light beam deflection method based on rotating double blazed gratings. A plurality of rotating double blazed gratings are adopted to form an array. Each rotating double blazed grating controls the oriented deflection of single-channel laser through the independent rotation around a rotation axis of the two blazed gratings, and the control of the oriented deflectionof the array laser beam can be controlled through rotating the double blazed grating array. During each process that rotating double blazed grating controls the oriented deflection of the single-channel laser, the aligning laser light source enters to a first block of blazed grating, and passes through a second block of blazed grating, the two blazed gratings conduct independent rotation around an axis, and thereby the two-dimensional deflection of the emitting light beam can be realized, and the deflection angle and position angle of each single-channel emitting light beam can be obtained through the rotation angle of the two blazed gratings. The invention is advantageous in that the output light beam power is high, light beam energy loss is little, deflection precision is high, and system volume is small.

Description

technical field [0001] The invention belongs to the technical field of beam control, and in particular relates to a method for deflecting array beams 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 axis...

AI Technical Summary

Problems solved by technology

Compared with my previous patent application CN201710450647.8 ("A Method for Two-Dimensional Beam Deflection Based on Rotating Double Blazed Gratings"), because the deflection angle range of the deflected beam based on the blazed grating is related to the wedge angle of the prism, the deflection The larger the angle, the larger the wedge angle of the prism, and the larger the volume and weight of the prism. It is difficult to achieve random orientation and has mechanical inertia.

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