Mid-IR high-order multiphoton absorption and nonlinear refraction in GaP, ZnSe, GaSe, and ZGP crystals

Konstantin L. Vodopyanov; Peter G. Schunemann; Taiki Kawamori

doi:10.1117/12.2601661

15 October 2021 Mid-IR high-order multiphoton absorption and nonlinear refraction in GaP, ZnSe, GaSe, and ZGP crystals

Konstantin L. Vodopyanov, Peter G. Schunemann, Taiki Kawamori

Proceedings Volume 11910, Laser-Induced Damage in Optical Materials 2021; 1191008 (2021) https://doi.org/10.1117/12.2601661
Event: SPIE Laser Damage, 2021, Online Only

Abstract

Using Z-scan and femtosecond 2.35-µm pulses, we study high-order nonlinear effects – multiphoton absorption (MPA) and nonlinear refraction (n2) in several notable mid-IR nonlinear monocrystals. We find that the multiphoton absorption orders N vary from N=4 (GaSe, ZGP) to N=6 (GaP, ZnSe) and correspond to the crystals’ bandgaps.

Conference Presentation

Citation Download Citation

Konstantin L. Vodopyanov, Peter G. Schunemann, and Taiki Kawamori "Mid-IR high-order multiphoton absorption and nonlinear refraction in GaP, ZnSe, GaSe, and ZGP crystals", Proc. SPIE 11910, Laser-Induced Damage in Optical Materials 2021, 1191008 (15 October 2021); https://doi.org/10.1117/12.2601661

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