激光与光电子学进展, 2017, 54 (12): 121405, 网络出版: 2017-12-11
基于多模激光抽运的1.70 μm波段拉曼增益谱实验研究 下载: 576次
Raman Gain Spectrum in 1.70 μm Band Pumped by Multimode Laser
激光器 1.70 μm波段 增益谱 多模激光 受激拉曼散射 受激布里渊散射 lasers 1.70 μm band gain spectrum multimode laser stimulated Raman scattering stimulated Brillouin scattering
摘要
1.70 μm波段光源在生物医疗、红外光源产生等方面具有巨大的应用前景, 1.70 μm波段增益谱研究是近年来的热点。为避免受激布里渊散射, 采用自制多模光纤激光器作为拉曼抽运源, 经1550 nm/1650 nm波分复用器抽运高非线性光纤和色散位移光纤产生拉曼增益谱。首先分析了多模激光抽运产生增益谱的原理, 然后通过实验分析不同功率下各种长度高非线性光纤、色散位移光纤组合产生的前向谱和后向谱。实验结果表明, 1 km长高非线性光纤和6 km长色散位移光纤的组合可得到输出功率最大、峰值波长接近1700 nm的后向增益谱, 这为实现1.70 μm波段连续激光器和超快激光器提供了技术参考。
Abstract
1.70 μm band laser sources have larger applications in many fields, such as biomedical medicine, infrared light generation and so on; the gain spectrum in 1.70 μm band is an international hotspot. A home-made multimode fiber laser is applied as the Raman pump in order to avoid stimulated Brillouin scattering. The pumped signal is injected into the high nonlinear fiber (HNLF) and dispersion shifted fiber (DSF) through 1550 nm/1650 nm wavelength division multiplex (WDM). Firstly, the principle of generating gain spectrum using the multimode laser is analyzed. Then, the forward and backward spectra are analyzed, these spectra are produced by HNLF and DSF with different lengths under the condition of different powers. The results show that, 1 km long HNLF and 6 km long DSF can be used to obtain the best backward gain spectrum with maximum power and peak wavelength of near 1700 nm. The experimental results provide technical reference for 1.70 μm band continuous wave lasers and ultrafast lasers.
都权力, 张鹏, 吴迪, 贾青松. 基于多模激光抽运的1.70 μm波段拉曼增益谱实验研究[J]. 激光与光电子学进展, 2017, 54(12): 121405. Du Quanli, Zhang Peng, Wu Di, Jia Qingsong. Raman Gain Spectrum in 1.70 μm Band Pumped by Multimode Laser[J]. Laser & Optoelectronics Progress, 2017, 54(12): 121405.