Group and phase velocity mismatch fringes in triple sum-frequency spectroscopy
Group and phase velocity mismatch fringes in triple sum-frequency spectroscopy
复制标题
三重和频谱中的群速度和相速度失配条纹
DOI:
10.1103/physreva.96.063835
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发表时间:
2017
影响因子:
2.9
通讯作者:
J. C. Wright
中科院分区:
文献类型:
--
作者:
Darien J. Morrow;Daniel D. Kohler;J. C. Wright
The effects of group and phase velocity mismatch are well-known in optical harmonic generation, but the non-degenerate cases remain unexplored. In this work we develop an analytic model which predicts velocity mismatch effects in non-degenerate triple sum-frequency mixing, TSF. We verify this model experimentally using two tunable, ultrafast, short-wave-IR lasers to demonstrate spectral fringes in the TSF output from a 500 $\mu$m thick sapphire plate. We find the spectral dependence of the TSF depends strongly on both the phase velocity and the group velocity differences between the input and output fields. We define practical strategies for mitigating the impact of velocity mismatches.