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Proceedings Paper

Generation of vortex spectra based on geometric phase for optical tweezers
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Paper Abstract

An optical driven actuator has a feature of a non-contact for applying light energy remotely. An optical tweezers and a laser manipulation for small particles are powerful tool for nano-micro bio-technology. Nowadays, a vectorial vortex attracts the attention of their purpose because it can rotate the particle by polarization. In this paper, we propose a spatially variant polarized beam called vectorial vortex array for the optical tweezers. A generation mechanism of the beam consists of phenomena of the polarization made of a radial polarizer and QHQ (quarter wave plate Q and half wave plate H) and the interference. The vectorial vortex array is converted to different spatially variant polarized beams by changing geometric phase. Their polarized beams are shown in experimentally.

Paper Details

Date Published: 17 November 2008
PDF: 6 pages
Proc. SPIE 7266, Optomechatronic Technologies 2008, 72660A (17 November 2008); doi: 10.1117/12.817387
Show Author Affiliations
Toshitaka Wakayama, Saitama Medical Univ. (Japan)
Yukitoshi Otani, Tokyo Univ. of Agriculture and Technology (Japan)
Toru Yoshizawa, Saitama Medical Univ. (Japan)

Published in SPIE Proceedings Vol. 7266:
Optomechatronic Technologies 2008
John T. Wen; Dalibor Hodko; Yukitoshi Otani; Jonathan Kofman; Okyay Kaynak, Editor(s)

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