Presentation Information
[24a-P06-13]Plasmon Mode Dependence and Their Steric Properties of Optical Chiral Fields near Gold Nanorectrangles
〇Riku Kasahara1, Seiju Hasegawa1, Kohei Imura1 (1.Waseda Univ.)
Keywords:
plasmon,aperture-type near-field optical microscopy,optical chiral field
Plasmonic optical chiral fields are promising for high-sensitive detection of chiral molecules and chiral crystallization. Three-dimensional visualization of optical chiral field is crucial for spatial control of the optical chiral field. In this study, optical chiral fields induced near gold nanorectangle are visualized using an aperture-type scanning near-field optical microscopy. We reveal from the near-field imaging that spatial features of the optical chiral fields are depending on plasmon mode excited. Steric properties of the chiral fields were also examined by the three-dimensional near-field imaging.