نتایج جستجو برای: spectral induced polarization

تعداد نتایج: 1192700  

2015
Haibo Zhao Zheng Wang Xuling Lin Huan Li Lei Feng Yu Zhou

The mechanism and characteristics of spectral polarization imaging technique are presented. The present research and developing trend of spectral polarization remote sensing are introduced. A novel method of spectral polarization imaging technique is discussed, which is based on static intensity modulation adding with double refraction crystal spectrometer. The static intensity modulation consi...

2006
K. H. Ploog

We study the spectral shape and the magnetic field induced polarization of hot-electron photoluminescence from the diluted magnetic semiconductor Ga,Mn As. It is demonstrated that the holes occupy predominantly the impurity band and not the valence band as required for the Rudermann-Kittel-Kasuya-Yosida-type exchange interaction. We show that the ground state of the impurity band is split by un...

2016
V. Sohatsky V. Kovalenko

The effect of low-powered polarized light on magnetic characteristics of ferrimagnetic garnet films has been studied at room temperatures by means of magneto-optical Faraday effect. A local magnetization of the film, occurred under the illumination, was carried out in the direction determined by orientation of polarization vector. The effect, accompanied by the domain structure reconstruction, ...

2016
Shermineh Rostami Michael Chini Khan Lim John P. Palastro Magali Durand Jean-Claude Diels Ladan Arissian Matthieu Baudelet Martin Richardson

Broadband laser sources based on supercontinuum generation in femtosecond laser filamentation have enabled applications from stand-off sensing and spectroscopy to the generation and self-compression of high-energy few-cycle pulses. Filamentation relies on the dynamic balance between self-focusing and plasma defocusing - mediated by the Kerr nonlinearity and multiphoton or tunnel ionization, res...

2017
N. Peyghambarian S. W. Koch

2014 Bulk CdSe and microcrystallites of CdSexS1-x embedded in a glass matrix are studied using femtosecond laser techniques. The ultrafast dynamics of the photogenerated carriers are measured. Spectral hole burning due to creation of a non-thermal carrier population is observed in both types of materials. The carrier recombination lifetime is measured. Coherent interaction between the probe pul...

2017
Hen Markovich Dmitrii Filonov Ivan Shishkin Pavel Ginzburg

Thin structured surfaces allow flexible control over propagation of electromagnetic waves. Focusing and polarization state analysis are among functions, required for effective manipulation of radiation. Here a polarization sensitive Fresnel zone plate lens is proposed and experimentally demonstrated for GHz spectral range. Two spatially separated focal spots for orthogonal polarizations are obt...

Journal: :Journal of the American Chemical Society 2012
Thomas Theis Micah P Ledbetter Gwendal Kervern John W Blanchard Paul J Ganssle Mark C Butler Hyun D Shin Dmitry Budker Alexander Pines

We have recently demonstrated that sensitive and chemically specific NMR spectra can be recorded in the absence of a magnetic field using hydrogenative parahydrogen induced polarization (PHIP) (1-3) and detection with an optical atomic magnetometer. Here, we show that non-hydrogenative parahydrogen-induced polarization (4-6) (NH-PHIP) can also dramatically enhance the sensitivity of zero-fiel...

Journal: :Optics letters 2014
Thomas Lutz Piotr Kolenderski Thomas Jennewein

Spectrally correlated photon pairs can be used to improve the performance of long-range fiber-based quantum communication protocols. We present a source based on spontaneous parametric downconversion, which allows one to control spectral correlations within the entangled photon pair without spectral filtering by changing the pump-pulse duration or the characteristics of the coupled spatial mode...

Journal: :The Journal of experimental biology 2010
C W Hawryshyn S D Ramsden K M Betke S Sabbah

We were interested in comparing the characteristics of polarization sensitivity in Atlantic salmon to those in Pacific salmon. Here we show that the common ancestor to the clade containing Salmo salar, Oncorhynchus mykiss, O. nerka, O. clarkii and Salvelinus fontinalis has the trait of ultraviolet polarization sensitivity. We examined spectral and polarization sensitivity of juvenile Atlantic s...

2002
David P. Shelton

The hyper-Rayleigh scattering ~HRS! spectrum of liquid D2O was measured at 90° scattering angle with linearly polarized light ~VV, HV, VH, and HH polarization geometries!. The VV and HV spectral profiles are similar, but the HV and VH spectral profiles are very different. This can be accounted for by scattering from nonlocal modes of molecular reorientation. The local mode and the transverse no...

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