We demonstrate a monolithic single frequency Tm-doped fiber amplifier with output power of 51.5 W. A single frequency fiber laser at 1.97 μm is amplified by a cascaded master oscillator power amplifier(MOPA) system w...We demonstrate a monolithic single frequency Tm-doped fiber amplifier with output power of 51.5 W. A single frequency fiber laser at 1.97 μm is amplified by a cascaded master oscillator power amplifier(MOPA) system with all-fiber configuration. The optical-to-optical conversion efficiency of the main fiber amplifier is 45%. No amplified spontaneous emission(ASE) or stimulated Brillouin scattering(SBS) effect is observed in the fiber amplifier. The output power could be further scaled by launching more pump power.展开更多
设计了一种基于马赫-曾德和光纤光栅滤波结构的掺铥光纤激光器,实现了2μm波段多波长激光输出。马赫-曾德滤波器由2个3 d B耦合器构成,光纤光栅反射波长为1950.35 nm,滤波器的波长间隔为1.6 nm,激光器阈值为70m W。通过实验证明了采用马...设计了一种基于马赫-曾德和光纤光栅滤波结构的掺铥光纤激光器,实现了2μm波段多波长激光输出。马赫-曾德滤波器由2个3 d B耦合器构成,光纤光栅反射波长为1950.35 nm,滤波器的波长间隔为1.6 nm,激光器阈值为70m W。通过实验证明了采用马赫-曾德结合光纤光栅进行滤波能够有效提高波长稳定性,实验中通过调节偏振控制器能够实现稳定的单波长、双波长及三波长激光输出。1892.2 nm单波长激光的波长漂移和功率漂移分别小于0.6 nm和0.969 d B,边模抑制比为49.75 d B;1902.8 nm和1932.0 nm双波长激光的波长漂移均小于0.4 nm,功率漂移分别小于1.021 d B和2.583 d B;1895.7 nm、1902.5 nm和1931.9 nm三波长激光的波长漂移分别小于0.4 nm、0.3 nm和1.0 nm,功率漂移分别小于2.548d B、1.441 d B和0.809 d B。输出激光3 d B线宽均小于0.8 nm。展开更多
文摘We demonstrate a monolithic single frequency Tm-doped fiber amplifier with output power of 51.5 W. A single frequency fiber laser at 1.97 μm is amplified by a cascaded master oscillator power amplifier(MOPA) system with all-fiber configuration. The optical-to-optical conversion efficiency of the main fiber amplifier is 45%. No amplified spontaneous emission(ASE) or stimulated Brillouin scattering(SBS) effect is observed in the fiber amplifier. The output power could be further scaled by launching more pump power.
文摘设计了一种基于马赫-曾德和光纤光栅滤波结构的掺铥光纤激光器,实现了2μm波段多波长激光输出。马赫-曾德滤波器由2个3 d B耦合器构成,光纤光栅反射波长为1950.35 nm,滤波器的波长间隔为1.6 nm,激光器阈值为70m W。通过实验证明了采用马赫-曾德结合光纤光栅进行滤波能够有效提高波长稳定性,实验中通过调节偏振控制器能够实现稳定的单波长、双波长及三波长激光输出。1892.2 nm单波长激光的波长漂移和功率漂移分别小于0.6 nm和0.969 d B,边模抑制比为49.75 d B;1902.8 nm和1932.0 nm双波长激光的波长漂移均小于0.4 nm,功率漂移分别小于1.021 d B和2.583 d B;1895.7 nm、1902.5 nm和1931.9 nm三波长激光的波长漂移分别小于0.4 nm、0.3 nm和1.0 nm,功率漂移分别小于2.548d B、1.441 d B和0.809 d B。输出激光3 d B线宽均小于0.8 nm。
