Iris-assisted terahertz field-induced second-harmonic generation in air

被引:4
作者
Beer, Amit [1 ,2 ]
Hershkovitz, Dror [1 ,2 ]
Fleischer, Sharly [1 ,2 ]
机构
[1] Tel Aviv Univ, Sch Chem, Raymond & Beverly Sackler Fac Exact Sci, IL-6997801 Tel Aviv, Israel
[2] Tel Aviv Univ, Ctr Light Matter Interact, IL-6997801 Tel Aviv, Israel
基金
以色列科学基金会;
关键词
ORDER HARMONIC-GENERATION; MATTER; LIGHT;
D O I
10.1364/OL.44.005190
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Terahertz field-induced second-harmonic generation (TFISH) is a technique for optical detection of broadband THz fields. We show that by placing an iris at the interaction volume of the THz and optical fields, the TFISH signal increases by several tenfold in atmospheric air. The iris-assisted TFISH amplification is characterized at varying air pressures and probe intensities and provides an elegant platform for studying nonlinear phase matching in the gas phase. (C) 2019 Optical Society of America.
引用
收藏
页码:5190 / 5193
页数:4
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