传能光纤长度对连续波单频光纤放大器SBS阈值特性的影响  

Influence of Transmitting Fiber Length on SBS Threshold of Continuous-Wave Single-Frequency All Fiber Amplifier

作　　者：郝丽云[1,2] 漆云凤[1] 苏岑[1,3] 刘驰[1] 周军(指导)[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海市全固态激光器与应用技术重点实验室,上海201800 [2]中国科学院大学,北京100049 [3]云南大学物理科学技术学院物理系,云南昆明650091

出　　处：《光学学报》2013年第8期148-152,共5页Acta Optica Sinica

基　　金：国家自然科学基金(60907045);国家863计划(2011AA030201)

摘　　要：受激布里渊散射(SBS)效应是影响连续波单频光纤激光放大器功率提升的重要因素,就传能光纤长度对连续波单频全光纤激光放大器SBS阈值功率的影响进行了实验研究。采用线宽为2.35kHz的非平面环形腔(NPRO)结构种子光源,搭建了两级级联单频连续波全光纤激光放大器,通过改变主放大器增益光纤与输出光隔离器之间传能光纤的长度,检测主放大器回光功率和光谱随输出激光功率的变化,分析了无源传能光纤长度对连续波单频全光纤激光放大器SBS阈值功率的影响,实验结果与理论计算结果相符。Stimulated Brillouin scattering （SBS） is an important factor that affects the increase of output power of single-frequency fiber amplifier. The impactions of length of transmitting fiber on the SBS threshold power of continuous-wave single-frequency all fiber amplifier are experimentally studied. Two stage continuous-wave all fiber amplifier is set up with the seed line-width of 2.35 kHz. By changing the length of the transmitting fiber between the gain fiber and the output isolator, the power feedback and spectral feedback of amplifier as a function of output power are measured, and the impactions of the length of transmitting on SBS characteristics of all fiber single-frequency laser are analyzed. The experimental results match very well with the theoretically calculated results.

关 键 词：激光器 全光纤放大器 单频激光 受激布里渊散射 

分 类 号：O436[机械工程—光学工程]