公开(公告)号：US20210203121A1

公开(公告)日：2021-07-01

申请号：US17022343

申请日：2020-09-16

Applicant: Harbin Institute of Technology

Inventor： Hongxing YANG ,  Yun ZOU ,  Ziqi YIN ,  Jing LI ,  Pengcheng HU ,  Jiubin TAN

IPC: H01S3/131 ,  G01K1/02 ,  H05B1/02 ,  H01S3/13

Abstract: The disclosure provides a high-frequency-reproducibility laser frequency stabilization method and device based on multi-point acquisition of laser tube temperature. The laser frequency stabilization device includes: a frequency stabilization control circuit. The frequency stabilization control circuit includes a polarizing beam splitter, an optical power conversion circuit, an A/D conversion circuit, a temperature measuring circuit, a microprocessor, a D/A converter and a heating film driver. The polarizing beam splitter is disposed outside any one of laser transmitting holes. The optical power conversion circuit is disposed on reflection and refraction optical paths of the polarizing beam splitter. The optical power conversion circuit, the A/D conversion circuit, the microprocessor, the D/A converter, the heating film driver and a plurality of groups of heating films are sequentially in one-way connection. Temperature sensors, the temperature measuring circuit and the microprocessor are sequentially in one-way connection. The method of the disclosure can increase the frequency reproducibility of a laser device from 10−8 to 10−9. The device of the disclosure can effectively avoid the drift of a final frequency stabilization temperature point.