Optical forces arising from phase gradients

David G. Grier; B. Sun; F. C. Cheong; Y. Roichman; S. H. Lee; Y. Roichman; J. Amato-Grill

doi:10.1117/12.814725

Optical forces arising from phase gradients

David G. Grier, B. Sun, F. C. Cheong, Y. Roichman, S. H. Lee, Y. Roichman, J. Amato-Grill

Research output: Contribution to journal › Conference article › peer-review

Abstract

Optical traps use forces exerted by specially structured beams of light to localize microscopic objects in three dimensions. In the case of single-beam optical traps, such as optical tweezers, trapping is due entirely to gradients in the light's intensity. Gradients in the light field's phase also control optical forces, however, and their quite general influence on trapped particles' dynamics has only recently been explored in detail. We demonstrate both theoretically and experimentally how phase gradients give rise to forces in optical traps and explore the sometimes surprising influence of phase-gradient forces on trapped objects' motions.

Original language	English (US)
Article number	72270E
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7227
DOIs	https://doi.org/10.1117/12.814725
State	Published - 2009
Event	Complex Light and Optical Forces III - San Jose, CA, United States Duration: Jan 28 2009 → Jan 29 2009

Keywords

Holographic optical trapping
Holographic particle tracking
Holographic video microscopy
Lorenz-Mie theory
Optical forces
Optical tweezers
Statistical physics
Stochastic machines

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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title = "Optical forces arising from phase gradients",

abstract = "Optical traps use forces exerted by specially structured beams of light to localize microscopic objects in three dimensions. In the case of single-beam optical traps, such as optical tweezers, trapping is due entirely to gradients in the light's intensity. Gradients in the light field's phase also control optical forces, however, and their quite general influence on trapped particles' dynamics has only recently been explored in detail. We demonstrate both theoretically and experimentally how phase gradients give rise to forces in optical traps and explore the sometimes surprising influence of phase-gradient forces on trapped objects' motions.",

keywords = "Holographic optical trapping, Holographic particle tracking, Holographic video microscopy, Lorenz-Mie theory, Optical forces, Optical tweezers, Statistical physics, Stochastic machines",

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language = "English (US)",

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T1 - Optical forces arising from phase gradients

AU - Grier, David G.

AU - Sun, B.

AU - Cheong, F. C.

AU - Roichman, Y.

AU - Lee, S. H.

AU - Roichman, Y.

AU - Amato-Grill, J.

PY - 2009

Y1 - 2009

N2 - Optical traps use forces exerted by specially structured beams of light to localize microscopic objects in three dimensions. In the case of single-beam optical traps, such as optical tweezers, trapping is due entirely to gradients in the light's intensity. Gradients in the light field's phase also control optical forces, however, and their quite general influence on trapped particles' dynamics has only recently been explored in detail. We demonstrate both theoretically and experimentally how phase gradients give rise to forces in optical traps and explore the sometimes surprising influence of phase-gradient forces on trapped objects' motions.

AB - Optical traps use forces exerted by specially structured beams of light to localize microscopic objects in three dimensions. In the case of single-beam optical traps, such as optical tweezers, trapping is due entirely to gradients in the light's intensity. Gradients in the light field's phase also control optical forces, however, and their quite general influence on trapped particles' dynamics has only recently been explored in detail. We demonstrate both theoretically and experimentally how phase gradients give rise to forces in optical traps and explore the sometimes surprising influence of phase-gradient forces on trapped objects' motions.

KW - Holographic optical trapping

KW - Holographic particle tracking

KW - Holographic video microscopy

KW - Lorenz-Mie theory

KW - Optical forces

KW - Optical tweezers

KW - Statistical physics

KW - Stochastic machines

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DO - 10.1117/12.814725

M3 - Conference article

AN - SCOPUS:63449138724

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VL - 7227

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 72270E

T2 - Complex Light and Optical Forces III

Y2 - 28 January 2009 through 29 January 2009

ER -

Optical forces arising from phase gradients

Abstract

Keywords

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