Results 21 to 30 of about 2,809,534 (302)
Polarization-induced phase shift of ultrafast photocurrents
EPJ Web of Conferences, 2013 Shift and injection currents are known to occur for linearly and circularly polarized optical excitations of semiconductors, respectively. Here, we show with room-temperature experiments that for excitation of discrete transitions the frequency dynamics ...
Pierz K., Priyadarshi S., Bieler M.
doaj +1 more source
Instantaneous phase shifting deflectometry
Optics Express, 2016 An instantaneous phase shifting deflectometry measurement method is presented and implemented by measuring a time varying deformable mirror with an iPhone ® 6. The instantaneous method is based on multiplexing phase shifted fringe patterns with color, and decomposing them in x and y using Fourier techniques.
Isaac, Trumper +2 more
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Geometric phase for a dimerized disordered continuum: Topological shot noise [PDF]
, 1998 Geometric phase shift associated with an electron propagating through a dimerized-disordered continuum is shown to be 0, or $\pm \pi$ (modulo 2$\pi$), according as the associated circuit traversed in the two-dimensional parameter space excludes, or ...
Berry M. V. +4 more
core +2 more sources
Optical interferometry in the presence of large phase diffusion [PDF]
, 2011 Phase diffusion represents a crucial obstacle towards the implementation of high precision interferometric measurements and phase shift based communication channels.
Brivio, Davide +7 more
core +3 more sources
Design of K-Band Power Amplifier with 180-Degree Phase- Shift Function Using Low-Power CMOS Process
Applied Sciences, 2023 In this study, a K-band complementary metal oxide semiconductor (CMOS) power amplifier was designed using a low-power (LP) process to improve the integration of the beamforming system.
Seongjin Jang +3 more
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The Coulomb phase shift revisited
, 2010 We investigate the Coulomb phase shift, and derive and analyze new and more precise analytical formulae. We consider next to leading order terms to the Stirling approximation, and show that they are important at small values of the angular momentum $l ...
ACC Villari +20 more
core +1 more source
Depolarization shift of the superradiant phase transition [PDF]
, 2016 We investigate the possibility of a Dicke-type superradiant phase transition of an atomic gas with an extended model which takes into account the short-range depolarizing interactions between atoms approaching each other as close as the atomic size scale,
Domokos, Peter +2 more
core +2 more sources
Journal of Engineering and Sustainable DevelopmentThis study presents a method to limit the functioning of the differential relay during the different operating conditions of an Indirect Symmetrical Phase Shift Transformer (ISPST).
Shailendra Kumar Bhasker, Manoj Tripathy
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Coupling Matrix Extraction of Microwave Filters by Using One-Dimensional Convolutional Autoencoders
Frontiers in Physics, 2021 The tuning of microwave filter is important and complex. Extracting coupling matrix from given S-parameters is a core task for filter tuning. In this article, one-dimensional convolutional autoencoders (1D-CAEs) are proposed to extract coupling matrix ...
Yongliang Zhang +6 more
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Snapshot phase-shifting diffraction phase microscope
Optics Letters, 2020 We propose a novel and simple snapshot phase-shifting diffraction phase microscope with a polarization grating and spatial phase-shifting technology. Polarization grating separates the incident beam into left and right circular polarization beams, one of which is used as the reference beam after passing through a pinhole.
Xiaobo, Tian, Rongguang, Liang
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