Real-time control of the rotation rate of a particle trapped in a focused laser beam

M. A. Rakhmatulin; Svetlana P. Kotova; Vladimir G. Volostnikov

doi:10.1117/12.417742

2 March 2001 Real-time control of the rotation rate of a particle trapped in a focused laser beam

M. A. Rakhmatulin, Svetlana P. Kotova, Vladimir G. Volostnikov

Proceedings Volume 4353, Laser Optics 2000: Control of Laser Beam Characteristics and Nonlinear Methods for Wavefront Control; (2001) https://doi.org/10.1117/12.417742
Event: Laser Optics 2000, 2000, St. Petersburg, Russian Federation

Abstract

The real time control of the rotation rate of a microscopic particle trapped in a focused laser beam by mean of polarization ellipticity of laser radiation has been studied. The ellipticity change was carried out with the modulator using orientational S-effect in nematic liquid crystals. The dependence of the particle rotation speed on the state of polarization ellipticity was determined. The calculation of an angular momentum of rotation per a unit of energy of the light field is shown.

Citation Download Citation

M. A. Rakhmatulin, Svetlana P. Kotova, and Vladimir G. Volostnikov "Real-time control of the rotation rate of a particle trapped in a focused laser beam", Proc. SPIE 4353, Laser Optics 2000: Control of Laser Beam Characteristics and Nonlinear Methods for Wavefront Control, (2 March 2001); https://doi.org/10.1117/12.417742

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KEYWORDS

Particles

Polarization

Modulators

Liquid crystals

Beam controllers

Control systems

Maxwell's equations

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