Details

Autor(en) / Beteiligte

• Zhan, Qiwen

Titel

Evanescent Bessel beam generation via surface plasmon resonance excitation by a radially polarized beam

Ist Teil von

• Optics letters, 2006-06, Vol.31 (11), p.1726

Ort / Verlag

United States

Erscheinungsjahr

2006

Quelle

MEDLINE

Beschreibungen/Notizen

• A simple setup for generating evanescent Bessel beams is proposed. When a radially polarized beam is strongly focused onto a dielectric-metal interface, the entire beam is p-polarized with respect to the dielectric-metal interface, enabling excitation of surface plasmons from all directions. The angular selectivity of surface plasmon excitation mimics the function of an axicon, leading to an evanescent nondiffracting Bessel beam. The created evanescent Bessel beam may be used as a virtual probe for near-field optical imaging and sensing applications.