Results 11 to 20 of about 230,869 (288)

Frequency shifts in stimulated Raman scattering [PDF]

open access: yes, 1980
The nonresonant contributions to the nonlinear susceptibility χ(3) produce a frequency chirp during stimulated Raman scattering. In the case of transient stimulated Raman scattering, the spectrum of the generated Stokes pulse is found at higher ...
Kaiser, Wolfgang, Zinth, Wolfgang
core   +1 more source

Theory of Raman Scattering from Orbital Excitations in Manganese Oxides [PDF]

open access: yes, 2001
We present a theory of the Raman scattering from the orbital wave excitations in manganese oxides. Two excitation processes of the Raman scattering are proposed.
B. S. Shastry   +43 more
core   +3 more sources

Raman gain against a background of non-thermal ion fluctuations in a plasma [PDF]

open access: yes, 2000
A complex stimulated Raman scattering event against a background of non-thermal ion acoustic waves in an inhomogeneous plasma is described. We obtain analytic forms for the Raman gain due to a five-wave interaction consisting of conventional three-wave ...
Barr, H C, Boyd, T J M, Lukyanov, A V
core   +1 more source

Intersubband electronic Raman scattering in narrow GaAs single quantum wells dominated by single-particle excitations [PDF]

open access: yes, 2004
We measured resonant Raman scattering by intersubband electronic excitations in GaAs/AlAs single quantum wells (QWs) with well widths ranging from 8.5 to 18 nm.
A. Pinczuk   +10 more
core   +1 more source

Lowering backward Raman and Brillouin scattering in waveguide Raman wavelength converters

open access: yesJournal of the European Optical Society-Rapid Publications, 2017
Background Liquid filled hollow core fiber Raman wavelength converters are devices enabling to red-shift the wavelength of laser beams delivered by either fixed wavelength or tunable lasers. Most of the reported converters operate in a pulsed regime with
Min Châu Phan Huy   +7 more
doaj   +1 more source

Optimization of electron Raman scattering in double rectangular quantum wells [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2013
In this work, by using the particle swarm optimization the electron Raman scattering for square double quantum wells is optimized. For this purpose, by combining the particle swarm algorithm together with the numerical solution procedures for equations ...
A. Keshavarz, N. Zamani
doaj   +1 more source

A Review of Raman-Based Technologies for Bacterial Identification and Antimicrobial Susceptibility Testing

open access: yesPhotonics, 2022
Antimicrobial resistance (AMR) is a global medical threat that seriously endangers human health. Rapid bacterial identification and antimicrobial susceptibility testing (AST) are key interventions to combat the spread and emergence of AMR.
Weifeng Zhang   +3 more
doaj   +1 more source

The influence of phase-modulation on femtosecond time-resolved coherent Raman spectroscopy [PDF]

open access: yes, 1988
The influence of phase-modulation on femtosecond time-resolved coherent Raman scattering is investigated theoretically and experimentally. The coherent Raman signal taken as a function of the spectral position shows unexpected temporal oscillations close
A. Laubereau   +18 more
core   +1 more source

Enhanced Raman Scattering by Molecular Nanoaggregates

open access: yesNanomaterials and Nanotechnology, 2014
The formation of a molecular aggregate in a confined, nanodimensioned region of space leads to what might be termed a ‘molecular nanoaggregate’. The present review deals with a theoretical formulation termed ‘aggregation-enhanced Raman scattering’ (AERS),
Daniel L. Akins
doaj   +1 more source

Observation and analysis of Fano-like lineshapes in the Raman spectra of molecules adsorbed at metal interfaces [PDF]

open access: yes, 2015
Surface enhanced Raman spectra from molecules (bipyridyl ethylene) adsorbed on gold dumbells are observed to become increasingly asymmetric (Fano-like) at higher incident light intensity.
Apkarian, V. A.   +6 more
core   +2 more sources

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