Fabrication of ideal geometric-phase holograms with arbitrary wavefronts
نویسندگان
چکیده
JIHWAN KIM, YANMING LI, MATTHEW N. MISKIEWICZ, CHULWOO OH, MICHAEL W. KUDENOV, AND MICHAEL J. ESCUTI* Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, North Carolina 27606, USA Currently at Apple Inc., Flat Panel Display, Cupertino, California 95014, USA Currently at Intel Corporation, Technology and Manufacturing Group, Hillsboro, Oregon 97124, USA *Corresponding author: [email protected]
منابع مشابه
Computer- originated aspheric holographic optical elements
R. C. Fairchild* J. R. Fienup Environmental Research Institute of Michigan Radar and Optics Division P.O. Box 8618 Ann Arbor, Michigan 48107 Abstract. Holographic optical elements (HOEs) recorded with arbitrary aspheric wavefronts can now be analyzed with a holographic raytracing design program. The recording wavefronts are defined by analytical phase functions, for example, a two -dimensional ...
متن کاملReflection hologram solar spectrum-splitting filters
In this paper we investigate the use of holographic filters in solar spectrum splitting applications. Photovoltaic (PV) systems utilizing spectrum splitting have higher theoretical conversion efficiency than single bandgap cell modules. Dichroic band-rejection filters have been used for spectrum splitting applications with some success however these filters are limited to spectral control at fi...
متن کاملAn accurate model of wave refraction over shallow water
A computer model of wave refraction is desirable, in the context of landscape modeling, to generate the familiar wave patterns seen near coastlines. In this article, we present a new method for the calculation of shallow water wave refraction. The method is more accurate than previously existing methods and provides realistic wave refraction effects. We resort to Fermat’s principle of the short...
متن کاملComputer-generated holograms for optical neural networks: on-axis versus off-axis geometry.
For optical neural networks implemented with computer-generated planar holograms the spacebandwidth product of the hologram is a major consideration. Off-axis holograms can be fabricated with a single binary transmission mask. However, the carrier frequency greatly increases the space-bandwidth product. On axis-holograms use a lower space-bandwidth product to encode interconnections but require...
متن کاملFar-field and Fresnel Liquid Crystal Geometric Phase Holograms via Direct-Write Photo-Alignment
We study computer-generated geometric-phase holograms (GPHs) realized by photo-aligned liquid crystals, in both simulation and experiment. We demonstrate both far-field and Fresnel holograms capable of producing far-field and near-field images with preserved fidelity for all wavelengths. The GPHs are fabricated by patterning a photo-alignment layer (PAL) using a direct-write laser scanner and c...
متن کامل