Sub-Nyquist interferometry: Implementation and measurement capability

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

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)2962-2969
Number of pages8
JournalOptical Engineering
Volume35
Issue number10
StatePublished - Oct 1996

Fingerprint

Interferometry
interferometry
Wavefronts
Testing
calibrating
Interferometers
hardware
interferometers
Hardware

Keywords

  • Aspheres
  • Interferometry
  • Metrology
  • Optical testing
  • Phase-shifting interferometry

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Sub-Nyquist interferometry : Implementation and measurement capability. / Greivenkamp, John E; Lowman, Andrew E.; Palum, Russell J.

In: Optical Engineering, Vol. 35, No. 10, 10.1996, p. 2962-2969.

Research output: Contribution to journalArticle

Greivenkamp, John E ; Lowman, Andrew E. ; Palum, Russell J. / Sub-Nyquist interferometry : Implementation and measurement capability. In: Optical Engineering. 1996 ; Vol. 35, No. 10. pp. 2962-2969.
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