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Proceedings Paper

Blazed Fresnel zone lenses approximated by discrete step profiles: effects of fabrication errors
Author(s): Margit Ferstl; Berndt Kuhlow; Edgar Pawlowski
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Paper Abstract

Blazed Fresnel zone lenses for 1.5 micrometers wavelength were fabricated in quartz glass by means of microstructuring technology. The blazed profile in each zone of the lenses was approximated by 2, 4, and 8 discrete levels. The effects of fabrication errors, such as depth and alignment errors, on the diffraction efficiency of the different Fresnel zone lenses were investigated. Further the location and intensity of the parasitic foci appearing due to the discrete level approximation are calculated. Theoretical results along with experimental measurements are presented.

Paper Details

Date Published: 2 March 1993
PDF: 11 pages
Proc. SPIE 1732, Holographics International '92, (2 March 1993);
Show Author Affiliations
Margit Ferstl, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
Berndt Kuhlow, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
Edgar Pawlowski, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)

Published in SPIE Proceedings Vol. 1732:
Holographics International '92
Yuri N. Denisyuk; Frank Wyrowski, Editor(s)

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