重复频率激光放大器是实现重复频率激光器的关键器件,其重复频率取决于对抽运及放大过程中产生热量的有效控制。针对千焦耳量级输出重复频率激光器的需求,通过合理的结构设计、冷却液选型及测试等,研制出一台基于氙灯抽运、钕玻璃增益...重复频率激光放大器是实现重复频率激光器的关键器件,其重复频率取决于对抽运及放大过程中产生热量的有效控制。针对千焦耳量级输出重复频率激光器的需求,通过合理的结构设计、冷却液选型及测试等,研制出一台基于氙灯抽运、钕玻璃增益介质、液体冷却、通光直径为Φ130mm的激光放大器样机。测试结果表明,该放大器样机可实现每分钟一次的重复频率运行,同时具备双程1.3189倍净增益,双程动态波前PV(peak to valley)平均值为0.2718波长(λ)(20℃,λ=1053nm,10发次计)和0.3223λ(30℃,λ=1053nm,10发次计)。展开更多
We report the generation of an 8.5-nJ chirped pulse from a mode-locked all-fiber Yb-doped laser.Modelocking is achieved through nonlinear polarization evolution(NPE) along with spectral filtering.The laser delivers 13...We report the generation of an 8.5-nJ chirped pulse from a mode-locked all-fiber Yb-doped laser.Modelocking is achieved through nonlinear polarization evolution(NPE) along with spectral filtering.The laser delivers 135 mW of average output power with positively chirped 10.9-ps pulses.The pulse repetition rate is 15.9 MHz,which results in an energy of 8.5 nJ per pulse.The externally dechirped pulse duration is 223 fs,and the pulse energy is 6 nJ,which corresponds to the peak power of～27 kW.展开更多
文摘重复频率激光放大器是实现重复频率激光器的关键器件,其重复频率取决于对抽运及放大过程中产生热量的有效控制。针对千焦耳量级输出重复频率激光器的需求,通过合理的结构设计、冷却液选型及测试等,研制出一台基于氙灯抽运、钕玻璃增益介质、液体冷却、通光直径为Φ130mm的激光放大器样机。测试结果表明,该放大器样机可实现每分钟一次的重复频率运行,同时具备双程1.3189倍净增益,双程动态波前PV(peak to valley)平均值为0.2718波长(λ)(20℃,λ=1053nm,10发次计)和0.3223λ(30℃,λ=1053nm,10发次计)。
文摘We report the generation of an 8.5-nJ chirped pulse from a mode-locked all-fiber Yb-doped laser.Modelocking is achieved through nonlinear polarization evolution(NPE) along with spectral filtering.The laser delivers 135 mW of average output power with positively chirped 10.9-ps pulses.The pulse repetition rate is 15.9 MHz,which results in an energy of 8.5 nJ per pulse.The externally dechirped pulse duration is 223 fs,and the pulse energy is 6 nJ,which corresponds to the peak power of～27 kW.
