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9 March 2024 Polarization and symmetry dependent high order harmonic generation in MoS2 monolayer
Harshitha Nandiga Gopalakrishna, Richard Hollinger, Viacheslav Korolev, Antony George, Michael W. Zuerch, Christian Spielmann, Audrey Turchanin, Daniil Kartashov
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Proceedings Volume PC12884, Ultrafast Phenomena and Nanophotonics XXVIII; PC128840C (2024) https://doi.org/10.1117/12.2692633
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
The study of strong field-driven nonlinear responses from high harmonic generation (HHG) in two dimension (2D) materials has been recognized as a valuable tool for probing ultrafast electron dynamics in the condensed matter systems. The laser polarization dependence of HHG in solids provides significant scientific insights into the crystal and band structure of the generation medium. In this work we experimentally investigate the impact of HHG in MoS2 monolayer by changing the laser polarization from linear to circular for different orientations relative to the symmetry axes of the crystal. The polarization analysis of harmonic emission reveals ellipticity and helicity dependent enhancement of even order harmonics which is strongly asymmetric near the symmetry directions of the crystal.
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Harshitha Nandiga Gopalakrishna, Richard Hollinger, Viacheslav Korolev, Antony George, Michael W. Zuerch, Christian Spielmann, Audrey Turchanin, and Daniil Kartashov "Polarization and symmetry dependent high order harmonic generation in MoS2 monolayer", Proc. SPIE PC12884, Ultrafast Phenomena and Nanophotonics XXVIII, PC128840C (9 March 2024); https://doi.org/10.1117/12.2692633
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KEYWORDS
Polarization
Crystals
Harmonic generation
Monolayers
Laser crystals
Photonics
Solid modeling
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