Characterization of few-fs deep-UV dispersive waves by ultra-broadband transient-grating XFROG
Characterization of few-fs deep-UV dispersive waves by ultra-broadband transient-grating XFROG
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DOI：
10.1364/ol.41.005535
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发表时间：
2016-12-01
期刊：
影响因子：
3.6
通讯作者：
Russell, Philip St J.
中科院分区：
文献类型：
--
作者：
Ermolov, Alexey;Valtna-Lukner, Heli;Russell, Philip St J.
利用多激发瞬态光栅互相关频率分辨光学门（FROG）实现了纳焦耳级、飞秒级深紫外脉冲的特性研究。理论上，该系统可以表征带宽从200 nm以下延伸到1.5 μ m以上的脉冲。实验结果表明，在充气HC-PCF中产生的中心波长为275 nm的200 THz（50 nm）宽色散波的持续时间为4 fs。数值模拟结果与实验结果吻合较好。结果证实，在充气HC-PCF中的色散波发射可以用作一系列应用中的超短UV脉冲的新型源，例如，超快UV泵浦-探测光谱。(C)2016美国光学学会
A multi-shot transient-grating cross-correlation frequency-resolved optical gating (FROG) is implemented for the characterization of nanojoule-scale, few-femtosecond, deepultraviolet pulses. In theory, the system can characterize pulses with a bandwidth extending from below 200 nm to above 1.5 mu m. It is experimentally shown that a 200 THz (50 nm) wide dispersive wave centered at 275 nm, generated in a gas-filled HC-PCF, has a temporal duration of 4 fs. The numerical simulations agree well with the experiment. The results confirm that dispersive wave emission in a gas-filled HC-PCF can be used as a novel source of ultrashort UV pulses in a range of applications, for example, ultrafast UV pump-probe spectroscopy. (C) 2016 Optical Society of America