Giant Raman shifting susceptibilities via infrared-resonant scattering

Guru Khalsa; Jiaoyang Zheng; Nicole A. Benedek; Jeffrey Moses

doi:10.1117/12.2614037

1 April 2022 Giant Raman shifting susceptibilities via infrared-resonant scattering

Guru Khalsa, Jiaoyang Zheng, Nicole A. Benedek, Jeffrey Moses

Proceedings Volume PC11985, Nonlinear Frequency Generation and Conversion: Materials and Devices XXI; PC1198506 (2022) https://doi.org/10.1117/12.2614037
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

When driven at infrared resonances, crystals possess giant Raman scattering susceptibilities due to nonlinear lattice coupling in the polarizability. A first-principles study of SrTiO3 reveals Stokes and anti-Stokes peaks in the cubic susceptibility with values >10^(-15) m^2/V^2, and large values of chi^(3) representing cross-phase and cross-amplitude modulation that persist from THz to visible frequencies. This implies a new route for achieving strong nonlinear frequency conversion in the infrared over short length scales, and a route for strong light-driven control of material optical properties on ultrafast timescales covering a hyperspectral range. We additionally discuss implications for non-centrosymmetric materials such as LiNbO3.

Conference Presentation

Citation Download Citation

Guru Khalsa, Jiaoyang Zheng, Nicole A. Benedek, and Jeffrey Moses "Giant Raman shifting susceptibilities via infrared-resonant scattering", Proc. SPIE PC11985, Nonlinear Frequency Generation and Conversion: Materials and Devices XXI, PC1198506 (1 April 2022); https://doi.org/10.1117/12.2614037

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