Results 81 to 90 of about 265,104 (237)

RAMAN LIGHT SCATTERING IN PSEUDOSPIN-ELECTRON MODEL AT STRONG PSEUDOSPIN-ELECTRON INTERACTION

Condensed Matter Physics, 2004
Anharmonic phonon contributions to Raman scattering in locally anharmonic crystal systems in the framework of the pseudospin-electron model with tunneling splitting of levels are investigated. The case of strong pseudospin-electron coupling is considered.
T.S.Mysakovych, I.V.Stasyuk
doaj   +1 more source

Stimulated Raman scattering in an optical parametric oscillator based on periodically poled MgO-doped stoichiometric LiTaO3

, 2009
The evolution versus pump power of the spectrum of a singly resonant optical parametric oscillator based on an MgO-doped periodically poled stoichiometric lithium tantalate crystal is observed.
Bruner, C. Drag, F. Bretenaker, Harris, Henderson, Henderson, Hirohashi, Johnston, Melkonian, My, O. Mhibik, O. Robin, Okishev, Penna, Samanta, Samanta, Samanta, Strossner, T-H. My, Vainio   +19 more
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Size-dependent Fano Interaction in the Laser-etched Silicon Nanostructures

Nanoscale Research Letters, 2008
Photo-excitation and size-dependent Raman scattering studies on the silicon (Si) nanostructures (NSs) prepared by laser-induced etching are presented here. Asymmetric and red-shifted Raman line-shapes are observed due to photo-excited Fano interaction in
Kumar Rajesh, Shukla AK, Mavi HS, Vankar VD   +3 more
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Radiation reaction force induced nonlinear mixing of Raman sidebands of an ultra-intense laser pulse in a plasma

, 2013
Stimulated Raman scattering of an ultra-intense laser pulse in plasmas is studied by perturbatively including the leading order term of the Landau-Lifshitz radiation reaction force in the equation of motion for plasma electrons.
Hatsagortsyan, Karen Z., Keitel, Christoph H., Kumar, Naveen   +2 more
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Strain-dependent Splitting of Double Resonance Raman Scattering Band in Graphene

, 2011
Under homogeneous uniaxial strains, the Raman 2D band of graphene involving two-phonon double-resonance scattering processes splits into two peaks and they altogether redshift strongly depending on the direction and magnitude of the strain.
Cheong, Hyeonsik, Son, Young-Woo, Yoon, Duhee   +2 more
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Determination of Temperature-Dependent Stress State in Thin AlGaN Layer of AlGaN/GaN HEMT Heterostructures by Near-Resonant Raman Scattering

Advances in Condensed Matter Physics, 2015
The temperature-dependent stress state in the AlGaN barrier layer of AlGaN/GaN heterostructure grown on sapphire substrate was investigated by ultraviolet (UV) near-resonant Raman scattering.
Yanli Liu, Xifeng Yang, Dunjun Chen, Hai Lu, Rong Zhang, Youdou Zheng   +5 more
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Effect of inelastic collisions on multiphonon Raman scattering in graphene

, 2007
We calculate the probabilities of two- and four-phonon Raman scattering in graphene and show how the relative intensities of the overtone peaks encode information about relative rates of different inelastic processes electrons are subject to. If the most
D. M. Basko, R. Saito
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Attributions of rich Raman modes and their temperature dependences in Mn4Nb2O9 single crystals

AIP Advances, 2019
It is an important task of single crystal Raman spectroscopy to identify the lattice vibration modes in terms of symmetry and further study the temperature-dependent behavior of various Raman modes.
Changzhao Chen, Qian Wang, Haiping Chen, Yiming Cao, Zhe Li   +4 more
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Backward Raman compression of x-rays in metals and warm dense matters

, 2010
Experimentally observed decay rate of the long wavelength Langmuir wave in metals and dense plasmas is orders of magnitude larger than the prediction of the prevalent Landau damping theory. The discrepancy is explored, and the existence of a regime where
Lindhard J., S. Ku, S. Son, Sung Joon Moon   +3 more
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Resonant hyper-Raman scattering in spherical quantum dots

, 1998
A theoretical model of resonant hyper-Raman scattering by an ensemble of spherical semiconductor quantum dots has been developed. The electronic intermediate states are described as Wannier-Mott excitons in the framework of the envelope function ...
A. Garcia-Cristobal, A. García-Cristobal, A. J. Shields, A. V. Baranov, A. V. Fedorov, A. V. Fedorov, Al. L. Efros, C. Hermann, C. Trallero-Giner, C. Trallero-Giner, C. Trallero-Giner, C. Trallero-Giner, C. Trallero-Giner, C. W. Beenaker, D. M. Brink, E. Menendez, E. Menendez, E. Menéndez-Proupin, E. Roca, G. Scamarcio, H. Fröhlich, J. D. Jackson, K. C. Rustagi, K. Inoue, M. C. Klein, M. Cardona, M. D. Levenson, M. P. Chamberlain, M. P. Chamberlain, P. T. C. Freire, R. Fuchs, R. G. Alonso, R. Ruppin, T. D. Krauss, U. Woggon, V. N. Denisov, W. L Wolf   +36 more
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