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Narrow-bandwidth, ~100 ps seeded optical parametric generation in CdSiP_2 pumped by Raman-shifted pulses at 1198 nm

机译:1198 nm拉曼位移脉冲泵浦的CdSiP_2中窄带宽,〜100 ps的种子光学参数生成

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摘要

Low-threshold, efficient optical parametric generation at ~4.64 μm is demonstrated using CdSiP_2 nonlinear crystal pumped by 150 ps Raman shifted pump pulses at 1198 nm in noncritical configuration at 1 kHz repetition rate. Maximum single pulse idler energy of 6 μJ and total conversion efficiency of 30% are achieved. Seeding at the signal wavelength with a distributed feedback laser diode enables ~25 fold narrowing of the bandwidths down to ~10 GHz, resulting in a Fourier product of ~1 for the ~100 ps long signal (1615 nm) and idler (4.64 μm) pulses.
机译:在非临界配置下,以1 kHz重复频率,通过在1198 nm处以150 ps拉曼位移泵浦脉冲泵浦了150 ps拉曼位移泵浦的CdSiP_2非线性晶体,证明了〜4.64μm的低阈值高效光学参数生成。最大单脉冲惰轮能量为6μJ,总转换效率为30%。使用分布式反馈激光二极管在信号波长处进行播种可以使低至〜10 GHz的带宽缩小约25倍,对于〜100 ps长的信号(1615 nm)和惰轮(4.64μm)产生的傅里叶积为〜1。脉冲。

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