Continuous operation of fiber gas Raman lasing at the 1135 nm wavelength is experimentally demonstrated with an output power exceeding 26 W.Rotational stimulated Raman scattering(Rot-SRS)is generated in the hydrogen g...Continuous operation of fiber gas Raman lasing at the 1135 nm wavelength is experimentally demonstrated with an output power exceeding 26 W.Rotational stimulated Raman scattering(Rot-SRS)is generated in the hydrogen gas filled 50 m homemade anti-resonant hollow-core fiber(AR-HCF).A single-frequency fiber laser at the 1064 nm wavelength is used as the pump source,and a minimum threshold of 31.5 W is measured where the core diameter of AR-HCF reaches37μm.Up to 40.4%power conversion efficiency of forward Rot-SRS is achieved in the single-pass configuration,corresponding to a quantum efficiency of 43.1%.Over 1 W strong backward Rot-SRS is observed in the experiment,ultimately limiting the further increase of Rot-SRS generation in the forward direction.展开更多
基金partly supported by the International Science and Technology Cooperation Program(No.2018YFE0115600)National Natural Science Foundation of China(No.61935002)+2 种基金Chinese Academy of Sciences(No.ZDBSLY-JSC020)supported by the CAS Pioneer Hundred Talents ProgramNational Key R&D Program of China(Nos.2020YFB1312802 and 2020YFB1805900)。
文摘Continuous operation of fiber gas Raman lasing at the 1135 nm wavelength is experimentally demonstrated with an output power exceeding 26 W.Rotational stimulated Raman scattering(Rot-SRS)is generated in the hydrogen gas filled 50 m homemade anti-resonant hollow-core fiber(AR-HCF).A single-frequency fiber laser at the 1064 nm wavelength is used as the pump source,and a minimum threshold of 31.5 W is measured where the core diameter of AR-HCF reaches37μm.Up to 40.4%power conversion efficiency of forward Rot-SRS is achieved in the single-pass configuration,corresponding to a quantum efficiency of 43.1%.Over 1 W strong backward Rot-SRS is observed in the experiment,ultimately limiting the further increase of Rot-SRS generation in the forward direction.
