Sub‐Nyquist interferometry: implementation and measurement capability

[+] Author Affiliations
John E. Greivenkamp

Optical Sciences Center, University of Arizona, Tucson, Arizona 85721

Andrew E. Lowman

Leica AG CH-9435 Heerbrugg, Switzerland

Russell J. Palum

Eastman Kodak Company Manufacturing Research and Engineering Rochester, New York 14653

Opt. Eng. 35(10), 2962-2969 (Oct 01, 1996). doi:10.1117/1.600991
History: Received Jan. 8, 1996; Revised Mar. 18, 1996; Accepted Mar. 18, 1996
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Sub‐Nyquist interferometry (SNI) provides a method for measuring wavefronts with large departures from a reference sphere, such as those encountered when testing steep aspheric surfaces. SNI allows wavefronts with several hundred waves of departure to be recorded and analyzed. The theory of SNI is reviewed, its experimental implementation described, and limitations in the hardware and potential improvements are discussed. The importance of calibrating the interferometer for non‐null testing is demonstrated. © 1996 Society of Photo−Optical Instrumentation Engineers.


John E. Greivenkamp ; Andrew E. Lowman and Russell J. Palum
"Sub‐Nyquist interferometry: implementation and measurement capability", Opt. Eng. 35(10), 2962-2969 (Oct 01, 1996). ; http://dx.doi.org/10.1117/1.600991

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