Cascaded auto-collimation device in high-power laser system

Abstract

The invention discloses a cascaded auto-collimation device in a high-power laser system. The cascaded auto-collimation device can be decomposed into a first-stage far-near field light path correctionstage and a second-stage far-field light path correction stage according to a light path correction stage in the high-power laser system. Based on the principle that one straight line is determined bytwo points and a light path is reversible, the device adheres to a single-near-field and multi-far-field monitoring mode on the overall structure, wherein all correction levels in a full light path of a high-power laser system are used as a unified whole on logic judgment, and the correction requirements of all the light path correction levels are sequentially judged in the reverse direction of light beam transmission of a main light path. Therefore, the pointing stability of the output light beam of the high-power laser system terminal and the automatic collimation of the full light path areensured, and the problems of large light beam jitter, poor stability and the like of the existing high-power laser system are solved. The auto-collimation device has the advantages of completely replacing manual work to adjust full-optical-path pointing, and being simple in structure, high in flexibility, expansibility, practicability and stability, high in correction efficiency and precision andthe like.

Description

technical field [0001] The invention relates to the field of optical control devices and large-scale high-power pulsed laser systems, in particular to a cascaded self-collimation device in a high-power laser system, which can be used generally for automatic collimation of all optical paths and the need to ensure the pointing stability of the terminal output beam All kinds of high-power laser systems with low repetition rate, large beam aperture, long and complex optical path. Background technique [0002] With the development of laser technology and optical component growth technology, the optical path length and complexity, output energy, and beam aperture of large-scale high-power pulsed laser systems have gradually increased, thereby improving the stability of laser energy, pulse width, and beam spatial pointing. Control requirements for indicators such as sex. In many high-field laser physics experiments based on high-power laser system focusing and shooting, such as pr...

AI Technical Summary

Problems solved by technology

For large-scale high-power pulsed laser systems, the structure in which multiple traditional single-stage "two points and one line" autocollimation devices are arranged sequentially is not only complicated but also has low efficiency of full optical path correction, and has a negative effect on the spatial pointing stability of the output beam at the end of the laser system. The control of the autocollimation device is not very ideal, and often the focused beam output by the terminal floats out of the target because the correction of the terminal autocollimation device is too late to respond to the correction of the previous stage autocollimation device.

[0003] At present, Chinese patent CN101063751A, Chinese patent CN100470194C and Chinese patent CN109632641A each disclose a traditional single-stage "two points and one line" self-collimation device structure, and there is no overall self-collimation solution for high-power laser systems

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