Results 201 to 210 of about 2,868 (259)
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Multifunctional double-layered diffractive optical element
Optics Letters, 2003We propose a novel multifunctional double-layered diffractive optical element (DOE) based on the fractional Talbot effect. This DOE consists of two layers: one is the encoding layer, in which multiple sub-DOEs, i.e., multiple optical functions, are encoded; the other is the decoding layer, which is a properly designed Talbot illuminator.
Enwen, Dai +3 more
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[1989] Proceedings of the Twenty-Second Annual Hawaii International Conference on System Sciences. Volume 1: Architecture Track, 2003
Diffractive optical elements that can be used to manipulate the amplitude, phase, and polarization of a wavefront in very complex ways are treated. Optical components whose feature size is larger than one wavelength, about equal to one wavelength, and smaller than one wavelength are considered.
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Diffractive optical elements that can be used to manipulate the amplitude, phase, and polarization of a wavefront in very complex ways are treated. Optical components whose feature size is larger than one wavelength, about equal to one wavelength, and smaller than one wavelength are considered.
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Silicon-based transmissive diffractive optical element
Optics Letters, 2003A silicon nitride (SiNx) membrane diffractive optical element (DOE) designed to exhibit beam-splitting and focusing behavior at visible wavelengths has been fabricated and tested. Since the fabrication process is based on silicon micromachining technology, the DOE is easily integrated with a laser diode chip and a photodiode chip on a silicon substrate
Chien Chieh, Lee +4 more
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Programmable Diffractive Optical Elements
Spatial Light Modulators and Applications, 1993Diffractive optical elements can be written onto spatial light modulators (SLM's) yielding several advantages.
Jeffrey A. Davis +5 more
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Optical Coupler Using Diffractive Optical Elements
The International Photonics and Optoelectronics Meeting (POEM), 2018Diffractive optical element (DOE) is employed as optical coupler used in optical interconnection. A modified GS algorithm using smaller sampling size with high intensity uniformity and well suppressed side lobes is proposed to design DOE.
Weidong Qu +5 more
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Diffractive optical elements for optical identification
Applied Optics, 2015We present the design and fabrication of diffractive optical elements for optical identification purposes. Two methods for optical identification are discussed. In this feasibility study, approaches using one and two binary reflective diffraction gratings are demonstrated.
Tuovinen Hemmo +6 more
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Multifunctional Diffractive Optical Elements
2017Multifunctional DOEs are elements that can simultaneously perform various optical operations. The terms multifunctional and multiplexed diffractive optics come under the same category. Multiplexing refers primarily to spatial as well as wavelength multiplexing, where it is possible to encode several functions on the same element but extract one ...
A. Vijayakumar, Shanti Bhattacharya
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Polarization-Sensitive Diffractive Optical Elements
Biomedical Optics and 3-D Imaging, 2010Polarization gratings were formed on a write-once type polarization-sensitive medium and their polarization characteristics were evaluated. A circularly polarized beam splitting function was observed in an orthogonally circular polarization grating.
Daisuke Barada +4 more
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Elements of diffractive optics
SPIE Proceedings, 1999Diffractive optics makes use of diffraction of light to design otpical elements and systems, which serve for imaging visual objects and transforming coherent optical beams. A diffractive structure can be computed and the pattern written using focused laser or electron beams. Phase nature of diffraction pattern is preferred.
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On a diffractive optical element
2004 International Semiconductor Conference. CAS 2004 Proceedings (IEEE Cat. No.04TH8748), 2005A diffractive optical element (DOE) aimed to reshape a Gaussian laser beam into a straight uniform light line is presented. Theory, the design procedure and technology are briefly described. Moreover a binary reflective DOE using a technology based on UV lithography and wet etching have been manufactured. Despite of a lot of fabrication errors, the DOE
V. Nascov +8 more
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