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Applied Optics

Applied Optics


  • Vol. 38, Iss. 22 — Aug. 1, 1999
  • pp: 4850–4860

Radiation-pressure-based cylindrically shaped microactuator capable of smooth, continuous, reversible, and stepped rotation

Robert C. Gauthier, Mike Ashman, Athanasios Frangioudakis, Howie Mende, and Shanjun Ma  »View Author Affiliations

Applied Optics, Vol. 38, Issue 22, pp. 4850-4860 (1999)

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Long cylindrical objects have been observed to align their central axis with the propagation axis of the illuminating laser beam through the action of radiation-pressure-generated force and torque. A cylindrically shaped microactuator based on this principle and suitable for micromachine applications is examined theoretically. When four in-plane laser beams converging at a common point centered on the cylinder are used, the cylinder can be made to rotate about a pivot point. In one mode, smooth, continuous, and reversible rotation is possible, whereas the other cylinder can be step rotated and locked, similar to the operation of conventional stepping motors. The properties of the device are analyzed based on obtaining either a constant rotation rate with variable beam power levels or a quasi-constant rotation rate with constant beam power levels or on using a fixed beam sequence rate that matches the system parameters and produces smooth or stepped operation.

© 1999 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(230.3990) Optical devices : Micro-optical devices
(350.3950) Other areas of optics : Micro-optics

Original Manuscript: December 23, 1998
Revised Manuscript: April 20, 1999
Published: August 1, 1999

Robert C. Gauthier, Mike Ashman, Athanasios Frangioudakis, Howie Mende, and Shanjun Ma, "Radiation-pressure-based cylindrically shaped microactuator capable of smooth, continuous, reversible, and stepped rotation," Appl. Opt. 38, 4850-4860 (1999)

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