Results 31 to 40 of about 259,340 (309)

Polarization resolved four-wave-mixing-based measurement in bulk material semiconductor optical amplifier [PDF]

, 2006
The anticipated growth in demand for bandwidth leads to the development of all-optical signal processing techniques at ever increasing data rates. One possible candidate to achieve the required performance is the semiconductor optical amplifier (SOA). It
S. Philippe, B. Kennedy, Philippe, Severine, Surre, Frederic, Kennedy, Brendan F., Bradley, Ann Louise, A. Bradley, Landais, Pascal, F. Surre, P. Landais   +9 more
core   +1 more source

Rigorous time domain responses of polarizable media II

Annals of Geophysics, 1998
We present and test in detail with synthetic data a method which may be used to retrieve the parameters describing the induced polarization properties of media which fit the generally accepted frequency dependent formula of Cole and Cole (1941) (CC model)
W. Plastino, M. Caputo
doaj   +1 more source

Quantification of soil textural and hydraulic properties in a complex conductivity imaging framework: Results from the Wolfsegg slope

Frontiers in Earth Science, 2022
We present an approach that permits to predict hydraulic conductivity from extensive, multi-methodical geophysical data collected on a hillslope affected by landslides in Austria.
Jakob Gallistl, Jakob Gallistl, Daniel Schwindt, Jochum Birgit, Lukas Aigner, Mandana Peresson, Adrián Flores Orozco   +6 more
doaj   +1 more source

Electromagnetically induced polarization grating [PDF]

Scientific Reports, 2018
AbstractBased on electromagnetically induced transparency (EIT), we investigate an all-optical grating structure to realize polarization-dependent multiple beam splitting in the Raman-Nath limit. To optimize the grating performance, higher excited state [e.g., nS1/2 (n ≥ 6)] of ultracold 87Rb atoms is employed to construct a five-level Ξ-Λ system ...
openaire   +2 more sources

Graphene-induced unique polarization tuning properties of excessively tilted fiber grating [PDF]

, 2016
By exploiting the polarization-sensitive coupling effect of graphene with the optical mode, we investigate the polarization modulation properties of a hybrid waveguide of graphene-integrated excessively tilted fiber grating (Ex-TFG).
Zhou, Kaiming, Wang, Changle, Jiang, Biqiang, Zhang, Lin (l.zhang@aston.ac.uk), Zhang, Lin, Gan, Xuetao, Zhao, Jianlin, Yin, Guolu   +7 more
core   +1 more source

Hyperpolarizing Small Molecules using Parahydrogen-Induced Polarization and Solid-State Spin Diffusion

, 2023
Parahydrogen-induced polarization (PHIP) is an inexpensive way to produce hyperpolarized molecules with polarization levels of >10% in the solution-state, but PHIP is strongly limited in generality since it requires chemical reactions or interactions ...
Felix, Josten, Martin B., Plenio, Laurynas, Dagys, Michael, Keim, Martin, Gierse, Ilai, Schwartz, Sebastian, Lucas, Stephan, Knecht, James, Eills   +8 more
core   +1 more source

Magnetically induced circular polarization

Physical Review A, 1987
Helium atoms excited to an aligned (1s3d)/sup 3/D state are produced by electron impact parallel to a magnetic field. The initial alignment of the atomic state evolves into an orientation with finite angular momentum along the magnetic field direction and thus gives rise to a circularly polarized component in the (1s3d)/sup 3/D..-->..(1s2p)/sup 3/P ...
Stricklett, K.L., Burns, D.J., Burrow, Paul   +2 more
openaire   +3 more sources

Induced Polarization Images the Plumbing System of Hydrothermal Vents in an Intracontinental Rift, Lake Abhé, Republic of Djibouti

Geophysical Research Letters, 2023
Recent developments in induced polarization allow for the characterization of alteration halos within hydrothermal systems. We explore the possibility of using electrical conductivity and normalized chargeability tomograms in concert to image ...
L. Piolat, Y. Geraud, A. Revil
doaj   +1 more source

Some peculiarities of the polarization structure of the electromagnetic field at high frequencies in geological sections: mathematical solutions and experiments

RUDN Journal of Engineering Research, 2020
The effects of induced polarization (IP) in the ore bodies and host rocks in the frequencies above 1 000 000 Hz were considered. The phase response of the complex resistivity (CR) system equipment Geozond have been explored instrumentally.
Vladimir Yu. Abramov
doaj   +1 more source

Application of Induced Polarization and Resistivity Methods to Identify Subsurface Layers in Bauxite Deposits Area of Kendawangan, West Kalimantan

Jurnal Pendidikan Fisika Indonesia, 2022
Kendawangan Sub-district, Ketapang Regency is one of the areas in West Kalimantan Province containing minerals of economic value, namely bauxite deposits. This study has applied both induced polarization and resistivity methods.
M Muhardi, M Anwar, K Kaharudin
doaj   +1 more source