Results 31 to 40 of about 37,422 (280)
Polarization-independent wavelength conversion at 2.5 Gb/s by dual-pump four-wave mixing in a strained semiconductor optical amplifier [PDF]
, 1996 We give a general expression for the polarization dependence of the four-wave mixing (FWM) efficiency in the dual-pump configuration. This expression, along with some general properties of the FWM susceptibility tensor, is used to propose a simple scheme
Geraghty, David F. +4 more
core +1 more source
A Pair Polarimeter for Linearly Polarized High Energy Photons [PDF]
, 2004 A high quality beam of linearly polarized photons of several GeV will become available with the coherent bremsstrahlung technique at JLab. We have developed a polarimeter which requires about two meters of the beam line, has an analyzing power of 20% and
Abbott, D. +19 more
core +2 more sources
Design of WideBand Transmission Polarization Converters
2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), 2019 A designing tool for wideband transmission polarization converting surfaces is presented. The optimized wideband polarizer comprises several metasurface layers whose unit cell is gradually rotated. The analysis is based on an analytical transmission line model of the multilayer structure with anisotropic elements.
Costa F., Borgese M.
openaire +2 more sources
Polarization converters in highly birefringent microfibers
Optics Express, 2014 A novel type of polarization converters (PCs) based on highly birefringent (Hi-Bi) microfibers is presented. Analytical formulation based on the Jones Matrix method and a numerical code based on the Full Vectorial Finite Difference Beam Propagation Method are developed to analyze the polarization evolutions in such PCs.
HaiFeng, Xuan +3 more
openaire +3 more sources
Cascaded wavelength conversion by four-wave mixing in a strained semiconductor optical amplifier at 10 Gb/s [PDF]
, 1997 We demonstrate for the first time cascaded wavelength conversion by four-wave mixing in a semiconductor optical amplifier. Bit-error-rate performance of
Geraghty, David F. +5 more
core +1 more source
Compact polarization converter for satellite antenna systems
Вісник Черкаського державного технологічного університету, 2021 В статье приведена методика разработки и оптимизации поляризационного устройства на основе квадратного волновода. Внутренняя структура предложенного устройства поляризации состоит из реактивных элементов в виде трех диафрагм на основе квадратного волновода.
Stepan Piltyay +3 more
openaire +3 more sources
Coherent transfer of light polarization to electron spins in a semiconductor [PDF]
, 2007 We demonstrate that the superposition of light polarization states is coherently transferred to electron spins in a semiconductor quantum well. By using time-resolved Kerr rotation we observe the initial phase of Larmor precession of electron spins whose
Arai, Koichiro +7 more
core +3 more sources
Ultra-wideband and wide-angle polarization rotator based on double W-shaped metasurface
AIP Advances, 2019 In this work, we design a novel polarization converter based on a metasurface with double w-shaped unit cells. The proposed polarization converter can convert linearly polarized incident waves into its cross polarized reflective counterparts in a very ...
Yinrui Zhao +5 more
doaj +1 more source
Compact polarization converter in InP-based material
Optics Express, 2005 We present a polarization converter using one-dimensional grating principles. The device is based on slanted slots etched deeply into an InP/InGaAsP heterostructure. Almost complete polarization conversion, with a 14 dB extinction ratio, is observed for a device less than 2 microm long.
M. V. KOTLYAR +4 more
openaire +4 more sources
On the specially designed fractal metasurface-based dual-polarization converter in the THz regime
Results in Physics, 2020 A specially designed fractal metasurface-based structure was investigated as a dual-polarization converter operating in the terahertz (THz) band. The proposed converter has the ability to perform both the linear-to-cross (LX) and linear-to-circular (LC ...
R.M.H. Bilal +4 more
doaj +1 more source