Design Consideration for the AbsoluteTesting Approach of Aspherics using Combined Diffractive Optical Elements

Khan, G.S. and Mantel, Klaus and Harder, Irina and Lindlein, Nobert and Schwider, Johanne (2007) Design Consideration for the AbsoluteTesting Approach of Aspherics using Combined Diffractive Optical Elements. OSA OPTICAL SOCIETY OF AMERICA, 46 (28). pp. 7040-7048. ISSN 0003-6935

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Official URL: http://www.opticsinfobase.org/abstract.cfm?uri=ao-...

Abstract

Aspheric optical surfaces are often tested using diffractive optics as null elements. For precise measurements, the errors caused by the diffractive optical element must be calibrated. Recently, we reported first experimental results of a three position quasi-absolute test for rotationally invariant aspherics by using combined-diffractive optical elements (combo-DOEs). Here we investigate the effects of the DOE substrate errors on the proposed calibration procedure and present a set of criteria for designing an optimized combo-DOE. It is demonstrated that this optimized design enhances the overall consistency of the procedure. Furthermore, the rotationally varying part of the surface deviations is compared with the rotationally varying deviations obtained by an N-position averaging procedure and is found to be in good agreement.

Item Type: Article
Uncontrolled Keywords: Diffractive optics ; Instrumentation ; measurement ; and metrology ; Interferometry ; Optical standards and testing
Subjects: CSIO > Optics
Depositing User: Ms. J Shrivastav
Date Deposited: 29 Mar 2012 23:39
Last Modified: 11 Apr 2012 09:35
URI: http://csioir.csio.res.in/id/eprint/81

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