Diffractive surface relief elements for use in the infrared: waveguide structures as reflection holograms

Peter Kipfer; Martin Collischon; Helmut Haidner; Johannes Schwider

doi:10.1117/12.190215

12 October 1994 Diffractive surface relief elements for use in the infrared: waveguide structures as reflection holograms

Peter Kipfer, Martin Collischon, Helmut Haidner, Johannes Schwider

Author Affiliations +

Proceedings Volume 2169, Nonconventional Optical Imaging Elements; (1994) https://doi.org/10.1117/12.190215
Event: International Colloquium on Nonconventional Optical Imaging Elements, 1993, Rydzyna-Rokosowo, Poland

Abstract

Waveguide structure in this context means metallic coated gratings which have periods smaller than the wavelength of the incident light. The grooves of these subwavelength gratings can be regarded as waveguides. Since the phase velocity depends on the groove width of the waveguide, the phase of the reflected light is a function of the duty cycle. By adding waveguides with different duty cycles together, binary lattices can be made which approximate nearly every arbitrary continuous phase function. Examples of these waveguide structures are the so-called artificial dielectrics which act as beam deflector, cylindrical Fresnel zone mirror and Fresnel zone mirror. These elements are presented in this paper.

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Peter Kipfer, Martin Collischon, Helmut Haidner, and Johannes Schwider "Diffractive surface relief elements for use in the infrared: waveguide structures as reflection holograms", Proc. SPIE 2169, Nonconventional Optical Imaging Elements, (12 October 1994); https://doi.org/10.1117/12.190215

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