A high-precision off-line debugging method for high-power laser far-field imaging system

Abstract

The invention discloses a high-precision off-line debugging method suitable for a high-power laser far-field imaging system. In this method, the axis position of the small hole plate is firstly calibrated by the line projector; the output beam of the laser is adjusted to be consistent with the axis height of the small hole plate, and the output spot of the laser coincides with the cross wire of the projected light of the line projector; Whether the return spot of the grating coincides with the output spot, establish the pitch and yaw position of the grating; adjust the relative position accuracy of the lens assembly and the grating through the line projector; adjust the spatial position of the remote imaging system outside the vacuum; The precise working position of the aperture plate and the grating finally determines the position of the light source LED. The method provided by the invention can improve the collimation precision, reduce the difficulty of online debugging caused by the problem of space interference, and avoid pollution to the space filter environment during the online debugging process. The invention has the advantages of simple operation, easy adjustment and high adjustment precision.

Description

technical field [0001] The invention belongs to the field of high-power laser collimation, and relates to a high-precision off-line debugging method suitable for high-power laser far-field imaging systems. Background technique [0002] With the deepening of laser fusion research, higher and higher requirements are put forward for high-power solid-state laser drivers. At the same time, due to the continuous increase in the power of high-power solid-state lasers, the system structure is more complex, and people have also put forward higher and higher requirements for its reliability, operability and ease of maintenance. The auto-collimation system, especially the far-field auto-collimation system is the key subsystem to ensure the normal operation of this type of driver. The accuracy and reliability of the far-field collimation system are not only the key to ensuring the accuracy of the target, but also to prevent the laser from blocking the hole. , An important factor to imp...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the problems of low overall far-field debugging accuracy and difficulty in online debugging due to simple offline debugging steps. The present invention adopts the following technical solutions:

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