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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 1 — Jan. 1, 2009
  • pp: A71–A74

Improving the system stability of a digital Shack–Hartmann wavefront sensor with a special lenslet array

L. P. Zhao, N. Bai, X. Li, Z. P. Fang, Z. W. Zhong, and A. A. Hein  »View Author Affiliations

Applied Optics, Vol. 48, Issue 1, pp. A71-A74 (2009)

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There has been very limited study on the stability of a Shack–Hartmann wavefront sensor (SHWS) since its emergence in the early 1970s. In this paper, through experimental study of the system stability of a digital SHWS, a special lenslet array with long focal range is designed and implemented with a spatial light modulator to improve the system performance. Diffractive lenses with long focal length range can provide pseudo-nondiffracting beams and a long range of focusing plane. The performance and effect of the modified SHWS with this lenslet array are investigated, and the experimental results show that the system stability and measurement repeatability are not sensitive to the sensing distance and stay at an acceptable level.

© 2008 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(220.3620) Optical design and fabrication : Lens system design
(230.3990) Optical devices : Micro-optical devices
(230.6120) Optical devices : Spatial light modulators

Original Manuscript: August 15, 2008
Revised Manuscript: September 23, 2008
Manuscript Accepted: October 14, 2008
Published: November 21, 2008

L. P. Zhao, N. Bai, X. Li, Z. P. Fang, Z. W. Zhong, and A. A. Hein, "Improving the system stability of a digital Shack-Hartmann wavefront sensor with a special lenslet array," Appl. Opt. 48, A71-A74 (2009)

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