Results 211 to 220 of about 2,528 (265)
Some of the next articles are maybe not open access.
[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.
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
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
openaire +1 more source
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
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
Diffractive optical elements in glass
2003Diffractive optical elements (DOE) in glass are achieved by the means of the thermal ion exchange in a substrate glass. We report about the technical advantages and limitations for the design of DOEs in respect of this new technology. A first application has been worked out for a Nd:YAG laser cutting Station.
Thoma, C. +3 more
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Diffractive optical elements in single crystal diamond
Optics Letters, 2020We demonstrate the design, fabrication, and experimental characterization of near-field binary phase transmission diffractive optical elements (DOEs) in single crystal diamond. Top-hat and arbitrary pattern DOE beam shapers were numerically optimized using an iterative Fourier transform algorithm (IFTA).
Thibault Wildi +2 more
openaire +2 more sources