Abstract

A method for reducing errors in aspherical mirror testing using a computer-generated hologram (CGH) is described. By using a modified filtering method the carrier frequency in the CGH can be reduced by two-thirds, and the resulting error due to distortion is only one-half of that of a conventional CGH. By adopting a Fizeau-type optical setup, only the surface quality of the reference affects the measured results.

© 1985 Optical Society of America

Testing aspheric surfaces with computer-generated holograms: analysis of adjustment and shape errors

Bernd Dörband and Hans J. Tiziani
Appl. Opt. 24(16) 2604-2611 (1985)

Absolute interferometric test of aspheres by use of twin computer-generated holograms

Stephan Reichelt, Christof Pruss, and Hans J. Tiziani
Appl. Opt. 42(22) 4468-4479 (2003)

Testing of steep convex aspheric surface with a Hartmann sensor by using a CGH

Ho-Soon Yang, Jae-Bong Song, In-Won Lee, and Yun-Woo Lee
Opt. Express 14(8) 3247-3254 (2006)

Interferometric testing for off-axis aspherical mirrors with computer-generated holograms

Masaru Kino and Mikio Kurita
Appl. Opt. 51(19) 4291-4297 (2012)

Phase errors in high line density CGH used for aspheric testing: beyond scalar approximation

S. Peterhänsel, C. Pruss, and W. Osten
Opt. Express 21(10) 11638-11651 (2013)