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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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Multilayer technology for diffractive optical elements
Applied Optics, 1996The proposed multilayer technology makes it possible to approximate a continuous phase distribution by discrete phase steps. Compared with binary techniques, a higher diffraction efficiency can be achieved. In most known processes a bulk substrate is used and etched directly; therefore it is difficult to control the height of the phase steps.
B, Goebel, L L, Wang, T, Tschudi
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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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Computer-generated stratified diffractive optical elements
Applied Optics, 2003We present what is to our knowledge a new type of diffractive optical element (DOE), the computer-generated stratified diffractive optical element (SDOE), a hybridization of thin computer-generated DOEs and volume holograms. A model and several algorithms for calculating computer-generated SDOEs are given.
Borgsmüller, Stefan +4 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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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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New diffractive optical elements
SPIE Proceedings, 1993Two classes of DOE in which fabrication is based on the technology used in microelectronics are considered: multiorder binary-phase (Dammann) gratings, and diffractive aberration correctors. Calculating the structure of the element is necessary to take into account the unavoidable technological deviations from the theoretical profile.
Sergei T. Bobrov +2 more
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Diffractive elements of variable optical power and high diffraction efficiency
Applied Optics, 1993The generation of diffractive elements of variable optical parameters and high diffraction efficiency is presented. It can be realized by a superposition of two conjugate kinoforms. In particular, the method gives rise to zone plates of variable focusing power as well as to circular and linear gratings of variable deflection angles.
A, Kolodziejczyk, Z, Jaroszewicz
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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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Design of diffractive optical elements for optical interconnections
SPIE Proceedings, 2017Diffractive optical elements (DOEs) can realize beam shaping with higher light efficiency, strong flexibility of diffraction pattern, and is suitable to be used in optical interconnections to split beams. In order to increase the intensity uniformity of the split beams, a hybrid algorithm merging Gerchberg-Saxton (GS) algorithm with gradient method is ...
Weidong Qu +8 more
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