Results 11 to 20 of about 859 (177)
Advanced Photonics Research, 2022 Modern quantitative optical imaging is developing toward high throughput and powerful data processing capabilities. Holography is a powerful technique to characterize quantitative phase delays introduced by light–matter interactions.
Zhengzhong Huang, Liangcai Cao
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Using The Kramers-Kronig Transforms To Retrieve The Conductivity From The Effective Complex Permittivity [PDF]
Advances in Radio Science, 2018 While measuring the effective permittivity of dispersive material it may be of interest to distinguish between conductivity losses (caused by free electrons) and dielectric losses (caused by bounded electrons) which both are included in the imaginary ...
M. Bakry, L. Klinkenbusch
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OPTICAL ANISOTROPY AND BIREFRINGENCE OF CuAlS2 CRYSTALS [PDF]
Journal of Engineering Science (Chişinău), 2021 Optical spectra were investigated in a spectral range of (300 - 700) nm for CuAlS2 single crystals. Transmission and wavelength modulated transmission spectra demonstrated presence of some impurity absorption bands in the region of optical transparency ...
MAȘNIC, Alisa +2 more
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Kramers-Kronig relation in gravitational lensing
Physical Review D, 2023 The Kramers-Kronig relation is a well-known relation, especially in the field of optics. The key to this relation is the causality that output comes only after input. We first show that gravitational lensing obeys the causality in the sense that (electromagnetic/gravitational) waves emitted from the source arrive at an observer only after the arrival ...
So Tanaka, Teruaki Suyama
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Spatial Kramers–Kronig relations and the reflection of waves [PDF]
Nature Photonics, 2015 Kramers–Kronig theory points to a new way of designing perfect anti-reflection surfaces. When a planar dielectric medium has a permittivity profile that is an analytic function in the upper or lower half of the complex position plane x = x′ + ix″ then the real and imaginary parts of its permittivity are related by the spatial Kramers–Kronig relations ...
Horsley, S. A. R. +2 more
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Comparison between optical and electrical data on hole concentration in zinc-doped p-GaAs [PDF]
Modern Electronic Materials, 2023 The optical and electrical properties of zinc-doped Cz p-GaAs have been studied. Reflection spectra of ten p-GaAs specimens have been taken in the mid-IR region.
Aleksandr G. Belov +6 more
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A conformal dispersion relation: correlations from absorption
Journal of High Energy Physics, 2020 We introduce the analog of Kramers-Kronig dispersion relations for correlators of four scalar operators in an arbitrary conformal field theory. The correlator is expressed as an integral over its “absorptive part”, defined as a double discontinuity ...
Dean Carmi, Simon Caron-Huot
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Results in Physics, 2017 Aqueous solutions with 70 °C and pH = 2.5 constant values were prepared from convenient chemical compounds to produce In2S3: Cu crystals and thin films. Crystal compositions were grown in this solution under special conditions.
Parisa Esmaili +3 more
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Investigation of structural, electronic, elastic and optical properties of Cd1-x-yZnxHgyTe alloys
AIP Advances, 2016 Structural, optical and electronic properties and elastic constants of Cd1-x-yZnx HgyTe alloys have been studied by employing the commercial code Castep based on density functional theory.
M. Tamer
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Splitting Magnitude Response into Real and Imaginary Parts
MATEC Web of Conferences, 2017 The determination of real and imaginary parts from magnitude responses is studied for causal linear time-invariant systems having monotonic impulse responses.
Shtrauss Vairis +2 more
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