OPTICAL-ELECTRIC-FIELD ENHANCEMENT DEVICE AND OPTICAL DETECTING DEVICE

摘要

[Problem] To provide an optical-electric-field enhancement device that can detect Raman-scattered light with higher sensitivity. [Solution] In an optical-electric-field enhancement device, localized plasmon is induced on the surface of a metal film by having a fine recessed and projected structure irradiated with light, said recessed and projected structure having the metal film formed thereon. The optical-electric-field enhancement device is configured of: an optical waveguide member (20), which is partly provided with a fine path section (13); a fine recessed and projected structure (18) provided on the surface of the fine path section (13); and a metal film (19) formed on the surface of the fine recessed and projected structure (18).