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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 16 — Jun. 1, 2010
  • pp: D6–D11

Motion-free hybrid design laser beam propagation analyzer using a digital micromirror device and a variable focus liquid lens

Mumtaz Sheikh and Nabeel A. Riza  »View Author Affiliations


Applied Optics, Vol. 49, Issue 16, pp. D6-D11 (2010)
http://dx.doi.org/10.1364/AO.49.0000D6


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Abstract

To the best of our knowledge, we propose the first motion-free laser beam propagation analyzer with a hybrid design using a digital micromirror device (DMD) and a liquid electronically controlled variable focus lens (ECVFL). Unlike prior analyzers that require profiling the beam at multiple locations along the light propagation axis, the proposed analyzer profiles the beam at the same plane for multiple values of the ECVFL focal length, thus eliminating beam profiler assembly motion. In addition to measuring standard Gaussian beam parameters, the analyzer can also be used to measure the M 2 beam propagation parameter of a multimode beam. Proof-of-concept beam parameter measurements with the proposed analyzer are successfully conducted for a 633 ‚ÄČ nm laser beam. Given the all-digital nature of the DMD-based profiling and all-analog motion-free nature of the ECVFL beam focus control, the proposed analyzer versus prior art promises better repeatability, speed, and reliability.

© 2010 Optical Society of America

OCIS Codes
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(350.5500) Other areas of optics : Propagation
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
General Optical Instrumentation

History
Original Manuscript: August 25, 2009
Manuscript Accepted: October 3, 2009
Published: January 7, 2010

Citation
Mumtaz Sheikh and Nabeel A. Riza, "Motion-free hybrid design laser beam propagation analyzer using a digital micromirror device and a variable focus liquid lens," Appl. Opt. 49, D6-D11 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-16-D6

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