Results 21 to 30 of about 809,318 (278)

Modeling Surface-Enhanced Spectroscopy With Perturbation Theory [PDF]

open access: yes, 2019
Theoretical modeling of surface-enhanced Raman scattering (SERS) is of central importance for unraveling the interplay of underlying processes and a predictive design of SERS substrates.
Mueller, Niclas S., Reich, Stephanie
core   +1 more source

Enhancement in structural, morphological, and optical properties of copper oxide for optoelectronic device applications

open access: yesNanotechnology Reviews, 2022
In this study, copper oxide (CuO) specimens were successfully prepared by the hydrothermal process at altered calcination temperatures; 350, 450, and 550°C.
Saleem Shahroz   +11 more
doaj   +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

Measuring the deviation from the superposition principle in interference experiments

open access: yesNew Journal of Physics, 2018
The Feynman path integral formalism has long been used for calculations of probability amplitudes. Over the last few years, it has been extensively used to theoretically demonstrate that the usual application of the superposition principle in slit based ...
G Rengaraj   +4 more
doaj   +1 more source

Silicon Raman polarizer

open access: yesOptics Letters, 2012
We theoretically investigate the polarization properties of Raman amplifiers based on silicon-on-insulator waveguides, and show that it is possible to realize a waveguide Raman polarizer. The Raman polarizer is a special type of Raman amplifier with the property of producing an amplified and highly repolarized beam when it is fed by a relatively weak ...
KOZLOV, Victor, WABNITZ, Stefan
openaire   +4 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

Horizon Tunneling Revisited: The Case of Higher Dimensional Black Holes

open access: yes, 2017
We study the tunneling of massless scalars across black hole horizons in any number of spacetime dimensions greater than three. Our analysis finds that corrections due to backreaction and the inverse dimensional expansion are naturally concomitant, and ...
Raman, Madhusudhan
core   +1 more source

Effect of low-Raman window position on correlated photon-pair generation in a chalcogenide Ge11.5As24Se64.5 nanowire [PDF]

open access: yes, 2015
We investigated correlated photon-pair generation via spontaneous four-wave mixing in an integrated chalcogenideGe11.5As24Se64.5photonicnanowire. The coincidence to accidental ratio, a key measurement for the quality of correlated photon-pair sources ...
Choi, Duk-Yong   +8 more
core   +1 more source

Influence of chirping the Raman lasers in an atom gravimeter: phase shifts due to the Raman light shift and to the finite speed of light

open access: yes, 2015
We present here an analysis of the influence of the frequency dependence of the Raman laser light shifts on the phase of a Raman-type atom gravimeter.
Cheng, B.   +3 more
core   +2 more sources

Silicon-nitride waveguides for on-chip Raman spectroscopy [PDF]

open access: yes, 2014
The evanescent tail of the guided modes can efficiently excite Raman active molecules located in the cladding of a waveguide. Similarly, a significant fraction of the total emitted Stokes power is evanescently coupled to the same mode.
Baets, Roel   +5 more
core   +1 more source

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