Generation of vortex spectra based on geometric phase for optical tweezers

Toshitaka Wakayama; Yukitoshi Otani; Toru Yoshizawa

doi:10.1117/12.817387

17 November 2008 Generation of vortex spectra based on geometric phase for optical tweezers

Toshitaka Wakayama, Yukitoshi Otani, Toru Yoshizawa

Proceedings Volume 7266, Optomechatronic Technologies 2008; 72660A (2008) https://doi.org/10.1117/12.817387
Event: International Symposium on Optomechatronic Technologies, 2008, San Diego, California, United States

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.

Citation Download Citation

Toshitaka Wakayama, Yukitoshi Otani, and Toru Yoshizawa "Generation of vortex spectra based on geometric phase for optical tweezers", Proc. SPIE 7266, Optomechatronic Technologies 2008, 72660A (17 November 2008); https://doi.org/10.1117/12.817387

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