Laser Q-switching device and Q-switching method based on high-speed fast reflecting mirror

Abstract

The invention discloses a laser Q-switching device and Q-switching method based on a high-speed fast reflecting mirror. The device is composed of a high-speed fast reflecting mirror module, a laser working substance module, a laser output mirror module, a fast reflecting mirror controller, a cooling module and a power module. According to the Q-switching method, the Q value in a cavity is adjustedby accurately controlling the rapid deflection of a high-speed fast steering mirror and changing the loss in the cavity, so that a required laser pulse sequence is output; the high-speed fast reflecting mirror can be placed in the middle of an optical path in a reflection type Q-switching mode, so that higher and faster laser Q-switching is achieved; and higher-frequency laser Q-switching and higher laser Q-switching capacity can also be achieved in the mode that a plurality of high-speed fast reflecting mirrors are connected in series.

Description

technical field [0001] The invention relates to the technical field of laser Q-switching devices, in particular to a laser Q-switching device and a Q-switching method based on a high-speed fast mirror. Background technique [0002] Laser Q-switching technology is an effective method to increase the peak output intensity of lasers. By compressing the continuous laser energy into pulse emission with extremely narrow bandwidth, the peak intensity can be increased by several orders of magnitude. Commonly used laser Q-switching technologies include electro-optic Q-switching, acousto-optic Q-switching, dye Q-switching, rotating mirror Q-switching, etc. Among them, electro-optic Q-switching and acousto-optic Q-switching are the main ones. Electro-optic Q-switching is to adjust the reflection loss of photons in the cavity by adding a step voltage to the crystal; Acousto-optic Q-switching is to drive the transducer to generate ultrasonic waves of the same frequency through a specific...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the mechanical structure of the rotating mirror Q-switching method is complicated, and the specific sequence Q-switching cannot be realized.

This device uses a high-speed fast mirror to realize reflective laser Q-switching, retains the advantages of the traditional rotating mirror Q-switching method, and at the same time solves the difficulties of complex mechanism and difficult to achieve sequential Q-switching

Images