Near-field imaging of photonic spin-orbit interactions and optical nonlinear effects in nanostructures

Benfeng Bai; Tong Cui

doi:10.1117/12.2602571

9 October 2021 Near-field imaging of photonic spin-orbit interactions and optical nonlinear effects in nanostructures

Benfeng Bai, Tong Cui

Proceedings Volume 11904, Plasmonics VI; 119040H (2021) https://doi.org/10.1117/12.2602571
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

Photonic spin-orbit interaction has attracted much attention in recent years. This talk first reports the efficient generation of ultra-compact optical vortex (OV) in achiral nanostructures, which has a radius of only 1 μm and possesses a signal-to-noise ratio larger than 6 dB. A spin-selective and phase-resolved scanning near-ﬁeld optical microscope (SNOM) is employed to probe and visualize the OV generation process in the spin basis. Furthermore, a SNOM system is developed for probing and analyzing nonlinear optical signals in nanostructures with subwavelength resolution, which images the near-field third-harmonic generation from an anapole dark-mode state in a silicon nanodisk.

Conference Presentation

Citation Download Citation

Benfeng Bai and Tong Cui "Near-field imaging of photonic spin-orbit interactions and optical nonlinear effects in nanostructures", Proc. SPIE 11904, Plasmonics VI, 119040H (9 October 2021); https://doi.org/10.1117/12.2602571

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