Sub-Nyquist interferometry: implementation and measurement capability

John E. Greivenkamp; Andrew E. Lowman; Russell J. Palum

doi:10.1117/1.600991

1 October 1996 Sub-Nyquist interferometry: implementation and measurement capability

John E. Greivenkamp, Andrew E. Lowman, Russell J. Palum

Optical Engineering, Vol. 35, Issue 10, (October 1996). https://doi.org/10.1117/1.600991

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.

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John E. Greivenkamp, Andrew E. Lowman, and Russell J. Palum "Sub-Nyquist interferometry: implementation and measurement capability," Optical Engineering 35(10), (1 October 1996). https://doi.org/10.1117/1.600991

Published: 1 October 1996

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