摘要
为了提高自注入锁定激光器的频率连续可调谐范围,对法布里-珀罗(FP)微腔在频率热调谐过程中注入锁定相位的变化关系进行研究。在传统频率热调谐的基础上,对自注入锁定激光器频率和相位等参数特性进行研究,提出一种在频率热调谐时加入自注入锁定相位补偿和DFB芯片电流补偿的改进算法,并在一台基于FP微腔自注入锁定激光器上对此算法进行验证实验。这台激光器的波长为1550 nm,3 dB线宽为785 Hz,通过一对加热电阻对FP微腔进行频率热调谐。实验结果表明:激光器硬件部分未作任何修改的情况下,改进后的算法在激光器原有驱动控制电路的单片机程序中实现了6 GHz的频率连续调谐范围。该工作为自注入锁定激光器提供一种简单高效且稳定性好的频率调谐方案,具有较高的实用性和市场前景。
In order to expand the continuous tunable range of a self-injection-locked laser frequency,the variation relationship of the injected locking phase of the Fabry-Perot(FP)microcavity during the frequencythermal 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 algorithm 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 microcavity self-injection locked laser.The laser operates at a wavelength of 1550 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 control circuit.No modifications are made to the hardware components of the laser.Ultimately,a continuous frequency tuning range of 6 GHz is realized.This work provides a simple,efficient,and stable frequency-tuning solution for self-injection-locked lasers,demonstrating high practicality and promising market prospects.
作者
王宇欣
钟山
梁伟
赵峰
詹志明
阎柏屹
康松柏
WANG Yu-xin;ZHONG Shan;LIANG Wei;ZHAO Feng;ZHAN Zhi-ming;YAN Bai-yi;KANG Song-bai(Key Laboratory of Atomic Frequency Standards,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China;School of Artificial Intelligence,Jianghan University,Wuhan 430056,China;Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China;Xi’an Jiaotong-Liverpool University,Suzhou 215123,China)
出处
《中国光学（中英文）》
EI
CAS
CSCD
北大核心
2024年第6期1265-1271,共7页
Chinese Optics
基金
国家自然科学基金(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)。
关键词
激光器
频率调谐
自注入
窄线宽
lasers
frequency tuning
self-injection locking
narrow linewidth
