Results 31 to 40 of about 262,950 (171)

Polarization Entanglement Purification using Spatial Entanglement [PDF]

open access: yes, 2001
Parametric down-conversion can produce photons that are entangled both in polarization and in space. Here we show how the spatial entanglement can be used to purify the polarization entanglement using only linear optical elements. Spatial entanglement as
Pan, Jian-Wei, Simon, Christoph
core   +2 more sources

Rectangular to polar conversion

open access: yesElectronics Letters, 1983
For the conversion of complex numbers from the rectangular form a + jb into polar re10 = r ? ?, it is required to evaluate r = ?(a2 + b2)and ?= tan?1 (a/b). A simplified method is presented here for evaluating r and ? from a and b using a simple analogue circuit that operates as an inverse sine function module.
K.M. Ibrahim, M.A.H. Abdul Karim
openaire   +1 more source

Multifunctional Single Layer Metasurface Based on Hexagonal Split Ring Resonator

open access: yesIEEE Access, 2020
We present a single-layer metasurface, which performs both cross and circular polarization conversion at multiple frequency bands. The unit cell of the proposed metasurface consists of periodic array of a uniquely designed hexagonal split ring resonator (
Muhammad Salman Salman   +3 more
doaj   +1 more source

Polarization conversion in a silica microsphere

open access: yesOptics Express, 2007
RevTeX4, 7 pages, 4 figures.
Bianucci, Pablo   +4 more
openaire   +3 more sources

Polarization-independent wavelength conversion at 2.5 Gb/s by dual-pump four-wave mixing in a strained semiconductor optical amplifier [PDF]

open access: yes, 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

An all-silicon design of a high-efficiency broadband transmissive terahertz polarization convertor

open access: yesFrontiers of Optoelectronics, 2023
Polarization, a fundamental behavior of electromagnetic waves, holds immense potential across diverse domains such as environmental monitoring, biomedicine, and ocean exploration.
Xiaohua Xing   +4 more
doaj   +1 more source

Fiber amplification of radially and azimuthally polarized laser light [PDF]

open access: yes, 2010
The results on amplifying either radially or azimuthally polarized light with a fiber amplifier are presented. Experimental results reveal that more than 85% polarization purity can be retained at the output even with 40dB amplification, and that ...
Asher A. Friesem   +18 more
core   +1 more source

Observation of Topologically Enabled Complete Polarization Conversion

open access: yesLaser & Photonics Reviews, 2023
AbstractExploiting topological ideas has been a major theme in modern photonics, which provides unprecedented opportunities to design photonic devices with robustness against defects. While most previous works in topological photonics have focused on band theory, recent theories extend the topological concepts to the analysis of scattering matrices and
Fujia Chen   +10 more
openaire   +2 more sources

Broadband Dynamic Polarization Conversion in Optomechanical Metasurfaces [PDF]

open access: yesFrontiers in Physics, 2020
Artificial photonic materials, nanofabricated through wavelength-scale engineering, have shown astounding and promising results in harnessing, tuning, and shaping photonic beams. Metamaterials have proven to be often outperforming the natural materials they take inspiration from.
Simone Zanotto   +9 more
openaire   +8 more sources

Complete description of polarization effects in emission of a photon by an electron in the field of a strong laser wave [PDF]

open access: yes, 2004
We consider emission of a photon by an electron in the field of a strong laser wave. Polarization effects in this process are important for a number of physical problems.
358   +7 more
core   +2 more sources

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