[20p-P3-1~6] 3.6 Ultrashort-pulse and high-intensity lasers

[20p-P3-2] Optical field photoemission via propagating surface plasmons

Kengo Takeuchi¹, 〇(PC)Tomoya Mizuno¹, Keisuke Kaneshima¹, Nobuhisa Ishii¹, Teruto Kanai¹, Jiro Itatani¹ (1.Univ. Tokyo ISSP)

Keywords:propagating surface plasmons, strong field photoemission

We observed propagating-surface plasmon-assisted photoemission from a grating irradiated by mid-IR laser pulses by measuring the incidence-angle dependence of photoelectron spectra. It is supposed that propagating surface plasmons can modulate the field enhancement caused by localized surface plasmons.