Influence of the finite aperture and observation of higher longitudinal-order fringes in Fizeau interferometry

Heikki M. Lauranto; Ari T. Friberg; Timo T. Kajava

doi:10.1117/12.208530

1 September 1995 Influence of the finite aperture and observation of higher longitudinal-order fringes in Fizeau interferometry

Heikki M. Lauranto, Ari T. Friberg, Timo T. Kajava

Author Affiliations +

Optical Engineering, Vol. 34, Issue 9, (September 1995). https://doi.org/10.1117/12.208530

Abstract

The interference pattern of a Fizeau interferometer, ideally a (nearly) self-imaging field, is examined under true measurement conditions. The quality of the higher longitudinal-order fringes is investigated by finite-aperture diffractive calculations. A specific symmetry property of the volume interference pattern, namely the invariance of the intensity structure under a rotation of the interferential wedge about its apex, is studied by nondiffractive simulations that take into account the instrument geometry and finite incident wave. The formation of the higher longitudinal-order fringes is verified experimentally. The possibility of transferring these fringes close to the device by a suitable non-normal incidence is demonstrated. The existence of various fractional Talbot planes is also confirmed.

Citation Download Citation

Heikki M. Lauranto, Ari T. Friberg, and Timo T. Kajava "Influence of the finite aperture and observation of higher longitudinal-order fringes in Fizeau interferometry," Optical Engineering 34(9), (1 September 1995). https://doi.org/10.1117/12.208530

Published: 1 September 1995

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