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Proceedings Paper

Midwave infrared ultrashort pulse laser frequency conversion in single crystal, polycrystalline, and amorphous optical materials
Author(s): Michael Tripepi; Michael Hastings; Aaron Schweinsberg; Laura Vanderhoef; Christopher Wolfe; Trenton Ensley; Miroslav Kolesik; Jerome Moloney; Enam Chowdhury; Anthony Valenzuela
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Paper Abstract

We investigate the nonlinear optical properties of transparent optical materials using ultrashort midwave infrared laser pulses between 3 and 4 microns. Random quasi-phase matching in polycrystalline materials generates multiple frequency harmonics of both odd and even orders throughout the transmission window of the target. We also investigate single crystal and amorphous materials and demonstrate a range of frequency conversion and pulse broadening. Simulations using a nonlinear polarization model enhanced with ionization and experimentally measured n2 values provide good qualitative agreement with experimental data.

Paper Details

Date Published: 2 March 2020
PDF: 7 pages
Proc. SPIE 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX, 112640Y (2 March 2020); doi: 10.1117/12.2547316
Show Author Affiliations
Michael Tripepi, The Ohio State Univ. (United States)
Michael Hastings, The Univ. of Arizona (United States)
Aaron Schweinsberg, U.S. Army Research Lab. (United States)
Laura Vanderhoef, U.S. Army Research Lab. (United States)
Christopher Wolfe, U.S. Army Research Lab. (United States)
Trenton Ensley, U.S. Army Research Lab. (United States)
Miroslav Kolesik, The Univ. of Arizona (United States)
Jerome Moloney, The Univ. of Arizona (United States)
Enam Chowdhury, The Ohio State Univ. (United States)
Anthony Valenzuela, U.S. Army Research Lab. (United States)


Published in SPIE Proceedings Vol. 11264:
Nonlinear Frequency Generation and Conversion: Materials and Devices XIX
Peter G. Schunemann; Kenneth L. Schepler, Editor(s)

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