Abstract

Plasmon nanofocusing, energy compression of propagating plasmons on a tapered metallic tip, is a promising tool for near-field scanning optical microscopy due to its unique properties such as background suppression and broadband property[1]. Although applications of plasmon nanofocusing has been still limited so far, it would make the plasmon-nanofocusing-based techniques more reliable and practical if an efficient fabrication method of metallic tips is established.

© 2017 Japan Society of Applied Physics, Optical Society of America