光学学报, 2011, 31 (8): 0806001, 网络出版: 2011-07-29   

基于光纤拉曼放大的级联式全光纤1020 nm光源

Cascaded All-Fiber 1020 nm Light Source Based on Fiber Raman Amplification
作者单位
国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
摘要
设计并制作了输出功率为196 mW的级联式全光纤1020 nm光源。该光源采用光纤拉曼放大器与掺镱光纤放大器级联的放大方案,实现了对低功率1020 nm种子光的放大。在光纤拉曼放大级,采用了3段不同长度的拉曼增益光纤进行了对比实验,比较了一定信号光功率和抽运光功率下拉曼增益光纤长度对光纤拉曼放大级输出功率的影响;测量了拉曼增益光纤长度为3150 m时光纤拉曼放大级输出光的光谱特性。研究了掺镱光纤放大级输出光的光谱特性和功率特性。实验得到的1020 nm光源为研究1064 nm光纤激光器同带抽运特性提供了抽运源。同时,该1020 nm光源所采用的基于光纤拉曼放大的级联式全光纤放大方案还可用于其他特殊波段低功率种子光的放大。
Abstract
Cascaded all-fiber 1020 nm light source with 196 mW output power is designed and demonstrated. This light source can realize the amplification of low-power 1020 nm seed light with a cascaded amplifier. The cascaded amplifier is composed of fiber Raman amplifier and Yb3+-doped single-mode fiber amplifiers. At the stage of fiber Raman amplification, comparing experiments with three different Raman gain fiber lengths are performed to study the influence of fiber length on the output power at fixed seed power and pump power, and the spectrum of output light with 3150 m Raman gain fiber is measured. The spectrum and power characteristics of output light of Yb3+-doped single-mode fiber amplifiers are studied. This 1020 nm light source provides pump source for the study of the tandem pumping of 1064 nm fiber laser. And this cascaded all-fiber amplification solution based on fiber Raman amplification can be used to amplify other special seed light at low power.
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许将明, 冷进勇, 侯静, 吴武明, 肖虎, 周朴. 基于光纤拉曼放大的级联式全光纤1020 nm光源[J]. 光学学报, 2011, 31(8): 0806001. Xu Jiangming, Leng Jinyong, Hou Jing, Wu Wuming, Xiao Hu, Zhou Pu. Cascaded All-Fiber 1020 nm Light Source Based on Fiber Raman Amplification[J]. Acta Optica Sinica, 2011, 31(8): 0806001.

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