Dimensionless parameters for the design of optical traps and laser guidance systems

Yaakov K. Nahmias*, Bruce Zhi Gao, David J. Odde

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Optical traps are routinely used for the manipulation of neutral particles. However, optical trap design is limited by the lack of an accurate theory. The generalized Lorenz-Mie theory (GLMT) solves the scattering problem for arbitrary particle size and predicts radial forces accurately. Here we show that the GLMT predicts the observed radial and axial forces in a variety of optical manipulators. We also present a dimensionless parameter β for the prediction of axial forces. Coupled with our correlation for radial escape forces, we now have a set of two simple correlations for the practical design of radiationforce-based systems.

Original languageAmerican English
Pages (from-to)3999-4006
Number of pages8
JournalApplied Optics
Volume43
Issue number20
DOIs
StatePublished - 10 Jul 2004
Externally publishedYes

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