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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 18 — Jun. 20, 2002
  • pp: 3506–3510

Micro-Electro-Mechanical System-Based Digitally Controlled Optical Beam Profiler

Sarun Sumriddetchkajorn and Nabeel A. Riza  »View Author Affiliations


Applied Optics, Vol. 41, Issue 18, pp. 3506-3510 (2002)
http://dx.doi.org/10.1364/AO.41.003506


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Abstract

An optical beam profiler is introduced that uses a two-dimensional (2-D) small-tilt micromirror device. Its key features include fast speed, digital control, low polarization sensitivity, and wavelength independence. The use of this 2-D multipixel device opens up the important possibility of realizing several beam profile measurement concepts, such as a moving knife edge, a scanning slit, a moving pinhole, a variable aperture, and a 2-D photodiode array. The experimental proof of the optical beam profiler concept using a 2-D digital micromirror device to simulate the 2-D moving knife edge indicates a small measurement error of 0.19% compared with the expected number based on a Gaussian beam-propagation analysis. Other 2-D pixel arrays such as a liquid-crystal-based 90° polarization rotator sandwiched between crossed polarizers can also be exploited for the optical beam whose polarization direction is known.

© 2002 Optical Society of America

OCIS Codes
(230.4040) Optical devices : Mirrors

Citation
Sarun Sumriddetchkajorn and Nabeel A. Riza, "Micro-Electro-Mechanical System-Based Digitally Controlled Optical Beam Profiler," Appl. Opt. 41, 3506-3510 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-18-3506

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