用乙炔吸收方法实现光纤光栅外腔式半导体激光器稳频的研究  

Realization of FBG external cavity semiconductor laser frequency stabilization by using acetylene absorption

作　　者：李志全[1] 苏凤燕[1] 康莉莉[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《燕山大学学报》2008年第1期37-40,共4页Journal of Yanshan University

摘　　要：设计了用乙炔吸收方法稳频1.53μm光纤光栅外腔式半导体激光器的系统结构并简述了基本原理。系统中的吸收气室选用渐变折射率和带尾纤的光纤,提高了耦合的稳定性。采用三次谐波锁定技术,消除了背景功率的影响。利用锁定放大器闭环控制布拉格波长,将激光器的输出波长锁定在乙炔气体1530.37nm的吸收峰上,24h内频率稳定度达10^(-8)。A structure ofthe system using acetylene absorption frequency stabilization 1.53 μm FBG external-cavity semiconductor laser is designed and its basic principles are introduced. The absorption air chamber of the system selected the fiber with graded refractive index and tail fiber to enhance the stability of the coupling. The impact of the background power is eliminated by using the third-harmonic lock technology. To control the Bragg wavelength, a lock-in amplifier is used, and the output wavelength is locked at the C2H2 absorption line of 1530.37 nm. The Frequency stability reached 10^-8 in the 24 hours.

关 键 词：光纤光栅外腔式半导体激光器 乙炔 稳频 

分 类 号：TN248.4[电子电信—物理电子学]