中国光学（中英文）2024，Vol.17Issue(6)：1265-1271,7.DOI:10.37188/CO.2024-0025
自注入锁定激光器的频率热调谐方法改进
Improved method for frequency-thermal tuning of a self-injection locked laser
摘要
Abstract
In order to expand the continuous tunable range of a self-injection-locked laser frequency,the vari-ation relationship of the injected locking phase of the Fabry-Perot(FP)microcavity during the frequency-thermal tuning process is studied.Based on the traditional frequency-thermal tuning methods,we explore the frequency and phase parameter characteristics of a self-injection locked laser.We propose an improved al-gorithm which adds self-injection locking phase compensation and DFB chip current compensation during frequency-thermal tuning methods.Experimental validation of this algorithm is conducted on a FP micro-cavity self-injection locked laser.The laser operates at a wavelength of 1 550 nm with a 3 dB linewidth of 785 Hz,achieving frequency-thermal tuning methods of the FP micro-cavity using a pair of heating resistors.The improved algorithm is implemented within the microcontroller program of the laser's original drive con-trol circuit.No modifications are made to the hardware components of the laser.Ultimately,a continuous fre-quency tuning range of 6 GHz is realized.This work provides a simple,efficient,and stable frequency-tun-ing solution for self-injection-locked lasers,demonstrating high practicality and promising market prospects.关键词
激光器/频率调谐/自注入/窄线宽Key words
lasers/frequency tuning/self-injection locking/narrow linewidth分类
信息技术与安全科学引用本文复制引用
王宇欣,钟山,梁伟,赵峰,詹志明,阎柏屹,康松柏..自注入锁定激光器的频率热调谐方法改进[J].中国光学（中英文）,2024,17(6):1265-1271,7.基金项目
国家自然科学基金(No.62075233) （No.62075233）
中国科学院稳定支持基础研究领域青年团队计划(No.YSBR-69)Supported by National Natural Science Foundation of China(No.62075233) （No.YSBR-69）
CAS Project for Young Scient-ists in Basic Research(No.YSBR-69) （No.YSBR-69）
