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Volume Modified Fresnel Zone Plates

Summary: Purdue University researchers have developed a novel method for designing and fabricating low numerical aperture (NA) and high NA volume Fresnel zone plates inside a bulk of fused silica.

Technology Benefits: Allows for volume writing of diffractive optical elementsReduces cost of fabrication with high efficiency

Technology Application: MaterialsManufacturing

Detailed Technology Description: Okan ErsoyPurdue Electrical and Computer Engineering

Countries: United States

Application No.: 7,969,654

*Abstract

*Background: The development of fabrication techniques for diffractive optical elements (DOEs) has accelerated because they can perform many optical functions like lenses, gratings, optical signal processors, beam splitters, and wavelength multiplexers and demultiplexers. Current Fresnel zone plates suffer from low diffraction efficiency because of manufacturing imperfections that cause scattering and phase shift errors.

*IP Issue Date: Jun 28, 2011

*IP Type: Utility

*Stage of Development: Proof of Concept

*Web Links: Purdue Office of Technology CommercializationPurdueInnovation and EntrepreneurshipOkan ErsoyPurdue Electrical and Computer Engineering

Country/Region: USA

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