Midwave infrared ultrashort pulse laser frequency conversion in single crystal, polycrystalline, and amorphous optical materials

Michael Tripepi; Michael Hastings; Aaron Schweinsberg; Laura Vanderhoef; Christopher Wolfe; Trenton Ensley; Miroslav Kolesik; Jerome Moloney; Enam Chowdhury; Anthony Valenzuela

doi:10.1117/12.2547316

2 March 2020 Midwave infrared ultrashort pulse laser frequency conversion in single crystal, polycrystalline, and amorphous optical materials

Michael Tripepi, Michael Hastings, Aaron Schweinsberg, Laura Vanderhoef, Christopher Wolfe, Trenton Ensley, Miroslav Kolesik, Jerome Moloney, Enam Chowdhury, Anthony Valenzuela

Author Affiliations +

Proceedings Volume 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX; 112640Y (2020) https://doi.org/10.1117/12.2547316
Event: SPIE LASE, 2020, San Francisco, California, United States

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.

Citation Download Citation

Michael Tripepi, Michael Hastings, Aaron Schweinsberg, Laura Vanderhoef, Christopher Wolfe, Trenton Ensley, Miroslav Kolesik, Jerome Moloney, Enam Chowdhury, and Anthony Valenzuela "Midwave infrared ultrashort pulse laser frequency conversion in single crystal, polycrystalline, and amorphous optical materials", Proc. SPIE 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX, 112640Y (2 March 2020); https://doi.org/10.1117/12.2547316

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