Spatial Structure and Simulations of Midwave Infrared Ultrashort Pulse Laser Frequency Conversion in Polycrystalline Chalcogenide Optical Materials

被引：0

作者：

Valenzuela, Anthony R. ^{[1
]}

Schweinsberg, Aaron ^{[1
]}

Gu, Jiahui ^{[2
]}

Kolesik, Miroslav ^{[2
]}

Ensley, Trenton ^{[3
]}

Vanderhoef, Laura ^{[1
]}

Tripepi, Michael, V ^{[3
]}

Wolfe, Christopher ^{[1
]}

Chowdhury, Enam ^{[4
,5
]}

机构：

[1] Weap & Mat Res Directorate, DEVCOM Army Res Lab, Aberdeen Proving Ground, MD 21005 USA

[2] Univ Arizona, Coll Opt Sci, 1630 E Univ Blvd, Tucson, AZ 85721 USA

[3] CDEVCOM Army Res Lab, Sensors & Electron Devices Directorate, Adelphi, MD 20783 USA

[4] Ohio State Univ, Dept Mat Sci & Engn, 201 W 19th Ave, Columbus, OH 43210 USA

[5] Dept Elect & Comp Engn, 2015 Neil Ave, Columbus, OH 43210 USA

来源：

NONLINEAR FREQUENCY GENERATION AND CONVERSION: MATERIALS AND DEVICES XX | 2021年 / 11670卷

关键词：

high harmonic generation; ultrashort pulse laser propagation; UPPE; SUPERCONTINUUM GENERATION;

D O I：

10.1117/12.2578794

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We experimentally and theoretically investigate the nonlinear frequency conversion of transparent chalcogenide optical materials using ultrashort midwave infrared laser pulses at 3.6 microns. Evidence of the structure of second through sixth harmonic generation demonstrates different levels of filamentation related to laser intensity, sample thickness, and sample position. Simulations using a (3+1)D model with experimentally measured n(2) values and random quasi phase matching provide good qualitative agreement with experimental data. Together, the data suggests that focusing geometry and material structure play a significant role in harmonic generation in these materials.

引用

页数：9

共 46 条

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