Chinese Optics Letters, 2016, 14 (1): 011901, Published Online: Aug. 6, 2018
Low threshold Raman effect in high power narrowband fiber amplifier Download: 1347次
190.0190 Nonlinear optics 140.3510 Lasers, fiber 190.5650 Raman effect 190.4380 Nonlinear optics, four-wave mixing
Abstract
A low-threshold Raman effect in a kilowatt ytterbium-doped narrowband fiber amplifier system is reported. The Raman Stokes light at 1120 nm is achieved with the total output power of only ~ 400 W , indicating that the Raman threshold of this kilowatt codirectional pumped continuous wave fiber amplifier is much lower than the predicted value estimated by the classic formula. To figure out the mechanism of this phenomenon, simulations based on the general stimulated Raman scattering (SRS) model are analyzed indicating that the key factor is the coupling between four-wave mixing (FWM) and SRS. The simulation results are in good agreement with our experiments.
Man Hu, Weiwei Ke, Yifeng Yang, Min Lei, Kai Liu, Xiaolong Chen, Chun Zhao, Yunfeng Qi, Bing He, Xiaojun Wang, Jun Zhou. Low threshold Raman effect in high power narrowband fiber amplifier[J]. Chinese Optics Letters, 2016, 14(1): 011901.