Transient nonlinear optical media facilitated by hot-electron transport

Wenshan Cai

doi:10.1117/12.2567227

27 August 2020 Transient nonlinear optical media facilitated by hot-electron transport

Wenshan Cai

Proceedings Volume 11461, Active Photonic Platforms XII; 1146122 (2020) https://doi.org/10.1117/12.2567227
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Second-order optical processes are pivotal to the active modulation and wave mixing of light waves. The inversion symmetry in most materials, however, prevents achieving a bulk chi-2 effect, thereby limiting the portfolio of second-order nonlinear materials. We propose and demonstrate ultrafast conversion of a statically-passive dielectric to a transient second-order nonlinear medium upon the generation and transfer of plasmonically induced hot electrons. Triggered by an optical switching signal, the amorphous dielectric with vanishing intrinsic chi-2 develops dynamically tunable second-order nonlinear responses, which can be leveraged to address the critical need for all-optical control of second-order nonlinearities in nanophotonic systems.

Conference Presentation

Citation Download Citation

Wenshan Cai "Transient nonlinear optical media facilitated by hot-electron transport", Proc. SPIE 11461, Active Photonic Platforms XII, 1146122 (27 August 2020); https://doi.org/10.1117/12.2567227

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