Broadband difference frequency mixing between visible and near-infrared pulses for few-cycle pulse generation with stable carrier-envelope phase
Broadband difference frequency mixing between visible and near-infrared pulses for few-cycle pulse generation with stable carrier-envelope phase
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DOI：
10.1007/s00340-013-5432-3
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
M. Bradler;C. Homann;E. Riedle
中科院分区：
文献类型：
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作者：
M. Bradler;C. Homann;E. Riedle
利用宽带可见非共线光参量放大器(NOPA)脉冲与基波泵浦激光脉冲的差频产生，可以产生载波包络相位被动稳定的超短红外脉冲。对于可见光NOPA脉冲，一个简单的棱镜压缩器就足以在红外中产生几个周期的脉冲，并且不需要额外的压缩。我们从理论上研究了它的概念，解释了它的原理，并通过将它应用于钛宝石和Yb：KYW激光系统，展示了它在高重复频率、长脉冲持续时间和不同波长下的应用。对于后者，在100μ的重复频率下，获得了能量为100kJ的1.8kfsm左右的稳定脉冲。
Difference frequency generation between broadband visible noncollinear optical parametric amplifier (NOPA) pulses and the fundamental pump laser pulses allows the generation of ultrashort infrared pulses with passively stabilized carrier-envelope phase. A simple prism compressor for the visible NOPA pulses is sufficient to generate few-cycle pulses in the infrared and no additional compression is needed. We theoretically investigate the concept, explain the principles, and demonstrate it for high repetition rate, long pulse durations, and various wavelengths by applying it to a Ti:sapphire and an Yb:KYW-based laser systems. For the latter sub-15 fs phase stable pulses around 1.8 μm with an energy of 100 nJ are obtained at 100 kHz repetition rate.