Beth's Experiment using Optical Tweezers

DN Moothoo; J Arlt; RS Conroy; F Akerboom; A Voit; Kishan Dholakia

Beth's Experiment using Optical Tweezers

DN Moothoo, J Arlt, RS Conroy, F Akerboom, A Voit, Kishan Dholakia

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

Abstract

We show how a student may construct simple and versatile optical tweezers to manipulate micron-sized particles. The tweezers apparatus is used to set birefringent calcite particles into rotation using circularly polarized light. This demonstrates the mechanical transfer of the angular momentum associated with circularly polarized light from the laser beam to the trapped particle. This offers the student a method for performing Beth's experiment qualitatively in the undergraduate laboratory. (C) 2001 American Association of Physics Teachers.

Original language	English
Pages (from-to)	271-276
Number of pages	6
Journal	American Journal of Physics
Volume	69
Issue number	3
Publication status	Published - Mar 2001

Keywords

MICROSCOPIC PARTICLES

Cite this

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AU - Dholakia, Kishan

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AB - We show how a student may construct simple and versatile optical tweezers to manipulate micron-sized particles. The tweezers apparatus is used to set birefringent calcite particles into rotation using circularly polarized light. This demonstrates the mechanical transfer of the angular momentum associated with circularly polarized light from the laser beam to the trapped particle. This offers the student a method for performing Beth's experiment qualitatively in the undergraduate laboratory. (C) 2001 American Association of Physics Teachers.

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JO - American Journal of Physics

JF - American Journal of Physics

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Beth's Experiment using Optical Tweezers

Abstract

Keywords

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