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国家重点基础研究发展计划(2011CB311803)

作品数:3 被引量:14H指数:1
相关作者:孙宏钱凯魏凯华陈滔姜培培更多>>
相关机构:浙江大学更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划浙江省教育厅科研计划更多>>
相关领域:电子电信更多>>

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Fiber laser-pumped,chirped,PPMgLN-based high efficient broadband mid-IR generation被引量:1
2013年
We demonstrate a high-efficiency, high-power-nanosecond fiber laser-pumped broadband mid-infrared out- put based on a linearly chirped PPMgLN crystal. By using a linearly polarized pulsed Yb-doped fiber laser as the pump, we experimentally obtain a 1.22-W broadband mid-infrared laser output under pump power of 10.15 W. The 3-dB bandwidths of the idler and signal output are approxiwately 150 and 13 nm, centering at 3.60 and 1.51 μm, respectively. The measured idler spectrum shows a smooth spectral profile.
吴波陈滔王杰姜培培杨丁中沈永行
一种基于增益调制技术的全光纤化脉冲Yb光纤激光器被引量:12
2013年
以波长为975nm的半导体激光器作为泵浦源,周期性地脉冲泵浦一个包含Yb掺杂光纤和光纤光栅对的Yb光纤激光器,实现了基于增益调制技术的全光纤化高功率Yb光纤激光器的稳定脉冲输出.在50kHz重频下,采用20W的泵浦功率和2.4μs的泵浦脉冲宽度,获得了1 060nm波长脉冲宽度仅100ns的稳定脉冲激光输出,单脉冲激光能量约为20μJ.以此作为脉冲激光种子进行功率放大,获得了性能稳定的全光纤结构高功率脉冲激光输出,放大后单脉冲能量超过200μJ,激光放大器斜率效率达到60%.
孙宏魏凯华钱凯陈滔陈滔姜培培杨丁中沈永行
关键词:光纤激光器脉冲激光增益调制
Fiber laser pumped burst-mode operated picosecond mid-infrared laser被引量:1
2015年
We demonstrate a compact periodically poled MgO-doped lithium niobate(MgO:PPLN)-based optical parametric oscillator(OPO) quasi-synchronously pumped by a fiber laser system with burst-mode operation.The pump source is a peak-power-selectable pulse-multiplied picosecond Yb fiber laser.The chirped pulses from a figure of eight-cavity modelocked fiber laser seed are narrowed to a duration of less than 50 ps using an FBG reflector and a circulator.The narrowed pulses are directed to pass through a pulse multiplier and to form pulse bunches,each of which is composed of 13 subpulses.The obtained pulse bunches are amplified by two-stage fiber pre-amplifiers:one-stage is core-pumped and the other is cladding-pumped.A fiberized acousto-optic modulator is inserted to control the pulse repetition rate(PRR) of the pulse bunches before they are power-amplified in the final amplifier stage with a large mode area(LMA) PM Yb-doped fiber.The maximum average powers from the final amplifier are 85 W,60 W,and 45 W,respectively,corresponding to the PRR of2.72 MHz,1.36 MHz,and 0.68 MHz.The amplified pulses are directed to pump an MgO:PPLN-based optical parametric oscillator(OPO).A maximum peak power at 3.45 μm is obtained approximately to be 8.4 kW.Detailed performance characteristics are presented.
魏凯华姜培培吴波陈滔沈永行
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