Title :
Gap mode formation in metallic, nanofocusing SNOM tapers for high spatial resolution broadband spectroscopy
Author :
Esmann, Martin ; Becker, Simon F. ; KyungWan Yoo ; Kollmann, Heiko ; Gros, Petra ; Vogelgesang, Ralf ; NamKyoo Park ; Lienau, Christoph
Author_Institution :
Carl von Ossietzky Univ., Oldenburg, Germany
Abstract :
Nanofocusing of surface plasmon polaritons enables broadband elastic scattering spectroscopy on individual nanoantennas without any signal demodulation. Clear experimental signatures of tip-sample gap mode formation hint at a potential increase in lateral resolution to single nanometers.
Keywords :
nanophotonics; near-field scanning optical microscopy; optical focusing; polaritons; surface plasmons; SNOM taper nanofocusing; broadband elastic scattering spectroscopy; high spatial resolution broadband spectroscopy; metallic SNOM taper; nanoantennas; surface plasmon polariton nanofocusing; tip-sample gap mode formation; Demodulation; Optical filters; Optical imaging; Optical scattering; Optical surface waves; Plasmons; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
