[23p-11F-1~17] 3.11 Nanoscale optical science and near-field optics (formerly 3.12)

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[23p-11F-6] Three-Dimensional Imaging of Optical Chiral Field near Gold Nanoplate Studied by Aperture-Type Scanning Near-Field Optical Microscopy

〇Seiju Hasegawa¹, Riku Kasahara¹, Kohei Imura¹ (1.Waseda Univ.)

Keywords:

plasmon,aperture-type scanning near-field optical microscopy,optical chirality

Plasmon resonance excited in a gold nanoplate strongly confines the optical electromagnetic field in the vicinity of the plate, forming an enhanced optical chiral field. In this study, we performed the three-dimensional visualization of the optical chiral field near the plate using an aperture-type scanning near-field optical microscope. We revealed that the optical chiral field visualized near the plate remains its spatial characteristics even at a distance of several hundred nm from the plate, while the signal intensity significantly decreases with the distance.