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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 4 — Feb. 1, 1998
  • pp: 747–752

Transformation of Gaussian to coherent uniform beams by inverse-Gaussian transmittive filters

Sie Poon Chang, Jin-Min Kuo, Yar-Ping Lee, Chen-Min Lu, and Kow-Je Ling  »View Author Affiliations


Applied Optics, Vol. 37, Issue 4, pp. 747-752 (1998)
http://dx.doi.org/10.1364/AO.37.000747


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Abstract

Several plano–convex aluminum thin films, ∼30 nm thick in the center and ∼2 mm in diameter, were deposited on microscope cover slides to function as inverse-Gaussian transmittive filters. By placing one of these filters in front of the Gaussian He–Ne laser, we can modify the beam intensity profile in the downstream direction. To yield a uniform beam, the position of the filter must be aligned in the transverse plane for maximum intensity at the output of the filter. These filters are easy to fabricate and are inexpensive. Most important, they can help produce collimated phase-coherent uniform beams, which are useful in high-precision fringe-analysis techniques.

© 1998 Optical Society of America

OCIS Codes
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(220.3630) Optical design and fabrication : Lenses
(350.7420) Other areas of optics : Waves

History
Original Manuscript: January 6, 1997
Revised Manuscript: July 14, 1997
Published: February 1, 1998

Citation
Sie Poon Chang, Jin-Min Kuo, Yar-Ping Lee, Chen-Min Lu, and Kow-Je Ling, "Transformation of Gaussian to coherent uniform beams by inverse-Gaussian transmittive filters," Appl. Opt. 37, 747-752 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-4-747


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