Optical traps with geometric aberrations

Yael Roichman; Alex Waldron; Emily Gardel; David G. Grier

doi:10.1364/AO.45.003425

Optical traps with geometric aberrations

Yael Roichman, Alex Waldron, Emily Gardel, David G. Grier

Research output: Contribution to journal › Article › peer-review

Abstract

We assess the influence of geometric aberrations on the in-plane performance of optical traps by studying the dynamics of trapped colloidal spheres in deliberately distorted holographic optical tweezers. The lateral stiffness of the traps turns out to be insensitive to moderate amounts of coma, astigmatism, and spherical aberration. Moreover holographic aberration correction enables us to compensate inherent shortcomings in the optical train, thereby adaptively improving its performance. We also demonstrate the effects of geometric aberrations on the intensity profiles of optical vortices, whose readily measured deformations suggest a method for rapidly estimating and correcting geometric aberrations in holographic trapping systems.

Original language	English (US)
Pages (from-to)	3425-3429
Number of pages	5
Journal	Applied Optics
Volume	45
Issue number	15
DOIs	https://doi.org/10.1364/AO.45.003425
State	Published - May 20 2006

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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AB - We assess the influence of geometric aberrations on the in-plane performance of optical traps by studying the dynamics of trapped colloidal spheres in deliberately distorted holographic optical tweezers. The lateral stiffness of the traps turns out to be insensitive to moderate amounts of coma, astigmatism, and spherical aberration. Moreover holographic aberration correction enables us to compensate inherent shortcomings in the optical train, thereby adaptively improving its performance. We also demonstrate the effects of geometric aberrations on the intensity profiles of optical vortices, whose readily measured deformations suggest a method for rapidly estimating and correcting geometric aberrations in holographic trapping systems.

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Optical traps with geometric aberrations

Abstract

ASJC Scopus subject areas

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