Results 151 to 160 of about 4,135,283 (192)

Holograms of high diffraction efficiency

Soviet Journal of Quantum Electronics, 1972
An experimental study was made of the effects of bleaching on holograms. Optimal bleaching conditions made it possible to achieve a high diffraction efficiency (50%) for a hologram which recorded interference of two plane waves. In the case of a hologram of a transparency, it was important to ensure a satisfactory quality of the reconstructed image ...
V I Bobrinev, V K Kozlova, M A Maiorchuk
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Design of multilayer diffractive optical elements with polychromatic integral diffraction efficiency

Optics Letters, 2010
What we believe to be a new method for designing multilayer diffractive optical elements (MLDOEs) for wideband with consideration of polychromatic integral diffraction efficiency (PIDE) is presented. The benefit of this method is that the maximum PIDE over the entire waveband for MLDOEs can be obtained.
Changxi, Xue, Qingfeng, Cui
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Efficient optimization of diffractive optical elements based on rigorous diffraction models

Journal of the Optical Society of America A, 2001
An efficient optimization strategy for the design of diffractive optical elements that is based on rigorous diffraction theory is described. The optimization algorithm combines diffraction models of different degrees of accuracy and computational complexity.
M E, Testorf, M A, Fiddy
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Effect of assembling errors on the diffraction efficiency for multilayer diffractive optical elements

Applied Optics, 2014
Based on the expression function of diffraction efficiency, and the phase delay function of diffractive optical elements (DOEs), the diffraction efficiency for multilayer diffractive optical elements (MLDOEs) is described with tilt and decenter assembling errors.
Long, Gao, Suet, To, Hongfang, Yang, Xin, Nie, Tianchen, Liu, Changxi, Xue   +5 more
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Diffraction efficiency of absorption gratings

Optical and Quantum Electronics, 1983
The diffraction efficiency of absorption gratings is investigated using a coupled multiwave analysis. For the four-wave case the analytical expressions for the signal amplitudes are given. The applicability of the four-wave approximation is also included.
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High-Efficiency Diffraction in Spiders

Optical Interference Coatings, 1997
Many animals in the insect/spider world exhibit strong metallic colours [1]. Such colouration is usually called structural, because the effects are caused by diffraction of light on semi-regular structures at the scale of the wavelength. The surface of the C.
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Approximate diffraction theories: efficient modeling of diffractive optical elements

Diffractive Optics and Micro-Optics, 2002
A new formulation of the generalized Kirchhoff approximation is presented which provides improved accuracy and a higher flexibility to model surface relief structures. The predicted diffraction amplitude is compared with rigorous coupled wave theory.
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Study on the influence of surface roughness on the diffraction efficiency of two-dimensional gratings

Optics Express, 2023
Hongzhong Liu, Chen Bangdao, Lu Bingheng
exaly  

Measurement of Diffraction Efficiency for Diffractive Optical Elements

Acta Optica Sinica, 2012
杨亮亮 Yang Liangliang, 崔庆丰 Cui Qingfeng, 刘涛 Liu Tao, 薛常喜 Xue Changxi   +3 more
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Diffraction edges perceived efficiency

2010
Today, noise barriers are recognized as the most effective noise minimization measures of road traffic noise near sensitive receptors located in the road surrounding areas. Especially where the urban occupation is characterized by buildings of low height. For higher buildings noise barriers can not be a completely effective solution.
Domingues, M., Antunes, S., Ramos, I., Grilo, A.   +3 more
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