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Proceedings Paper

Numerical computation of the back-focal plane interference pattern by a spherical scatterer under a focused Gaussian beam
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Paper Abstract

Three-dimensional position of optically trapped dielectric particles can be detected by measuring the back-focal plane interference pattern of incident and scattered fields. Time-domain surface current based near zone to far zone transformation was implemented to compute the interference pattern by a spherical scatterer under a focused Gaussian beam. Computed results are compared with experimental data for validations.

Paper Details

Date Published: 28 August 2010
PDF: 6 pages
Proc. SPIE 7762, Optical Trapping and Optical Micromanipulation VII, 77620F (28 August 2010); doi: 10.1117/12.860309
Show Author Affiliations
Yong-Gu Lee, Gwangju Institute of Science and Technology (Korea, Republic of)
Sun-Uk Hwang, Gwangju Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 7762:
Optical Trapping and Optical Micromanipulation VII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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