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2 March 1993 Blazed Fresnel zone lenses approximated by discrete step profiles: effects of fabrication errors
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Proceedings Volume 1732, Holographics International '92; (1993) https://doi.org/10.1117/12.140386
Event: Holographics International '92, 1992, London, United Kingdom
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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Margit Ferstl, Berndt Kuhlow, and Edgar Pawlowski "Blazed Fresnel zone lenses approximated by discrete step profiles: effects of fabrication errors", Proc. SPIE 1732, Holographics International '92, (2 March 1993); https://doi.org/10.1117/12.140386
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