基于超连续谱分析的双色被动同步光纤激光器  

Two-color passive synchronous fiber laser based on supercontinuum spectrum analysis

作　　者：焦纪铭 霍礼忠 武佳美 杨康文 JIAO jiming;HUO lizhong;WU jiamei;YANG kangwen(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《光学技术》2022年第3期266-270,276,共6页Optical Technique

基　　金：国家自然科学基金委面上项目(11974248)。

摘　　要：实验展示了一种双色被动同步的全保偏光纤激光器,该激光器可产生宽带光谱有望用于相干反斯托克斯拉曼散射光谱探测。激光器由掺镱与掺铒的光纤激光器组成,采用注入式被动同步的方式,在150μm腔长失配距离内获得稳定的被动同步状态。其中掺铒激光器由高非线性光纤光谱展宽至1000~1700 nm,与掺镱激光器输出光在空间中合束后通过和频晶体产生和频信号。被动同步双色光纤激光器可作为相干反斯托克斯拉曼散射的稳定、宽光谱探测超快光源,有望实现宽光谱多个拉曼峰同时探测。In this experiment,a dual-color passive synchronous all-polarization-maintaining fiber laser is demonstrated,which can generate wide spectrum for coherent anti-Stokes Raman scattering detection.The laser is composed of Yb-doped and Er-doped fiber lasers.Stable passive synchronization state can be achieved within 150μm cavity length mismatch distance by injecting synchronization.The spectrum of Er-doped laser can be broadened to 1000~1700 nm by a highly nonlinear fiber,Then the Er-doped laser is temporally and spatially combined with Yb-doped laser to generate a sum-frequency signal through nonlinear crystal.The passive synchronous dual-color fiber laser can be used as a stable and ultra-fast light source for the detection of coherent anti-Stokes Raman scattering and is expected to realize the simultaneous detection of multiple Raman peaks in the wide spectrum.

关 键 词：光纤激光器 激光同步 超连续谱产生 相干反斯托克斯拉曼散射 

分 类 号：O433.4[机械工程—光学工程]