TY - GEN
T1 - Spatial structure and simulations of midwave infrared ultrashort pulse laser frequency conversion in polycrystalline chalcogenide optical materials
AU - Valenzuela, Anthony
AU - Schweinsberg, Aaron
AU - Gu, Jiahui
AU - Kolesik, Miroslav
AU - Ensley, Trenton
AU - Vanderhoef, Laura
AU - Tripepi, Michael
AU - Wolfe, Christopher
AU - Chowdhury, Enam
N1 - Funding Information:
The authors would like to thank Mr. Colby Adams, Mr. Jeffrey Ball, Dr. Ryan O’Donnell, Dr. Zachary Quine, and Dr. Thomas Rohrabaugh. J.G. and M.K. acknowledge funding from ARL W911NF1920192 and AFOSR FA9550-16-1-0121. E.A.C. and M.T. acknowledge funding from Army Research Office Cooperative Agreement W911NF2020238 and Azimuth Corporation contract 238-5404-OSU.
Publisher Copyright:
© 2021 SPIE.
PY - 2021
Y1 - 2021
N2 - 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 n2 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.
AB - 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 n2 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.
KW - High harmonic generation
KW - UPPE
KW - Ultrashort pulse laser propagation
UR - http://www.scopus.com/inward/record.url?scp=85107029990&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85107029990&partnerID=8YFLogxK
U2 - 10.1117/12.2578794
DO - 10.1117/12.2578794
M3 - Conference contribution
AN - SCOPUS:85107029990
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Nonlinear Frequency Generation and Conversion
A2 - Schunemann, Peter G.
A2 - Schepler, Kenneth L.
PB - SPIE
T2 - Nonlinear Frequency Generation and Conversion: Materials and Devices XX 2021
Y2 - 6 March 2021 through 11 March 2021
ER -