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Applied Optics

Applied Optics


  • Vol. 44, Iss. 22 — Aug. 1, 2005
  • pp: 4654–4658

Highly sensitive wave-front sensor with a non-zero-order phase plate

Hongxin Luo, Changhe Zhou, and Hua Zou  »View Author Affiliations

Applied Optics, Vol. 44, Issue 22, pp. 4654-4658 (2005)

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We propose a novel highly sensitive wave front detection method for a quick check of a flat wave front by taking advantage of a non-zero-order π phase plate that yields a non-zero-order diffraction pattern. When a light beam with a flat wave front illuminates a phase plate, the zero-order intensity is zero. When there is a slight distortion of the wave front, the zero-order intensity increases. The ratio of first-order intensity to that of zero-order intensity is used as the criterion with which to judge whether the wave front under test is flat, eliminating the influence of background light. Experimental results demonstrate that this method is efficient, robust, and cost-effective and should be highly interesting for a quick check of a flat wave front of a large-aperture laser beam and adaptive optical systems.

© 2005 Optical Society of America

OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

Original Manuscript: October 11, 2004
Revised Manuscript: February 8, 2005
Manuscript Accepted: February 16, 2005
Published: August 1, 2005

Hongxin Luo, Changhe Zhou, and Hua Zou, "Highly sensitive wave-front sensor with a non-zero-order phase plate," Appl. Opt. 44, 4654-4658 (2005)

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