Results 211 to 220 of about 1,547,483 (263)

Impact of Scattering Variation Measured by Line-Field Confocal Optical Coherence Tomography on Fluorescence Measurement by Optical Spectroscopy: A Study on Phantoms and Human Skin Models.

Skin Pharmacol Physiol
Zaytsev SM, Blondel W, Ogien J, Dubois A, Amouroux M.   +4 more
europepmc   +1 more source

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Origin of optical anisotropy in reflectance anisotropy spectroscopy of semiconductor surfaces

SPIE Proceedings, 2006
The optical anisotropy of a semiconductor surface can have different origins, such as, local-field effects, the electro-optics effect, reconstruction, surface dislocations, and surface roughness. A comprehensive, quantitative picture on how these effects are related to surface optical anisotropies (SOA) can now be obtained thanks to the progress in the
N Arzate-Plata
exaly   +2 more sources

Reflectance anisotropy spectroscopy on the Ge(113) surface

Surface Science, 1996
Abstract The clean and hydrogenated Ge(113) surface was investigated using reflectance anisotropy spectrosopy (RAS). Surface-induced optical transitions related to the 3 × 2 reconstruction of the clean surface were identified. Two of these transitions are quenched when hydrogen adsorption changes the reconstruction.
J -T Zettler
exaly   +3 more sources

A Reflectance Anisotropy Spectroscopy Investigation of Porphyrin Langmuir-Blodgett Films

physica status solidi (a), 2001
Until now, with a few exceptions, Reflectance Anisotropy Spectroscopy (RAS) has been applied mostly to inorganic semiconductors and metals, proving to be a powerful tool to investigate their optical properties, via anisotropies introduced by the surface in otherwise isotropic bulk materials.
GOLETTI, CLAUDIO, BUSSETTI, GIANLORENZO, CHIARADIA, PIETRO, PAOLESSE, ROBERTO, DI NATALE, CORRADO, Mazzone, E, D'AMICO, ARNALDO   +6 more
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Spin-orbit effects on reflectance anisotropy spectroscopy

Physical Review B, 2004
We study the effects of the spin-orbit coupling on the reflectance anisotropy spectroscopy of semiconductor surfaces. A microscopic formulation based on a semi-empirical tight binding approach which includes spin-orbit interaction is used and theoretical
R. A. Vázquez-Nava, Bernardo S. Mendoza, C. Castillo   +2 more
openaire   +2 more sources

The application of Reflectance Anisotropy Spectroscopy to organics deposition

EPIOPTICS-7, 2004
We present the use of Reflectance Anisotropy Spectroscopy (RAS) as a probe to study the deposition of organics We started the study of ordered layers deposited onto disordered substrates by Langmuir-Blodgett (LB) and Langmuir-Schaefer (LS) techniques, nevertheless we believe that the goal is the application of RAS to OMBE (Organic Molecular Beam ...
G. Bussetti, C. Goletti, P. Chiaradia, T. Berzina, DALCANALE, Enrico, S. Nardis, A. Froiio, R. Paolesse, E. Mazzone, C. Di Natale, A. D'Amico   +10 more
openaire   +4 more sources

Real-time reflectance anisotropy spectroscopy of GaAs homoepitaxy

Applied Optics, 2020
Reflectance anisotropy spectroscopy (RAS) is a highly sensitive optical probe for the real-time study of the epitaxial growth of zincblende semiconductors. Here we report on (1) non-equilibrium RAS spectra acquired in real time during the homoepitaxial growth of GaAs, and (2) RAS spectra for GaAs surfaces under equilibrium with several arsenic ...
A, Lastras-Martínez, L E, Guevara-Macías, J G, Santiago-García, J, Ortega-Gallegos, I A, Ruiz-Alvarado, R, Martínez-Espinosa, D, Ariza-Flores, R, Castro-García, R E, López-Estopier, R E, Balderas-Navarro, L F, Lastras-Martínez   +10 more
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Reflection anisotropy spectroscopy

Reports on Progress in Physics, 2005
Reflection anisotropy spectroscopy (RAS) is a non-destructive optical probe of surfaces that is capable of operation within a wide range of environments. In this review we trace the development of RAS from its origins in the 1980s as a probe of semiconductor surfaces and semiconductor growth through to the present where it is emerging as a powerful ...
P Weightman, D S Martin, R J Cole, T Farrell   +3 more
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DIFFERENTIAL-REFLECTANCE SPECTROSCOPY AND REFLECTANCE-ANISOTROPY SPECTROSCOPY ON SEMICONDUCTOR SURFACES

Surface Review and Letters, 1999
The development and the state of the art of surface methods based on the reflection of light are briefly reviewed. A short account is given of the main experimental and theoretical results obtained on semiconductor surfaces over about three decades.
CHIARADIA, PIETRO, DEL SOLE, RODOLFO
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Azimuth-dependent reflection anisotropy spectroscopy

Journal of Applied Physics, 2003
A detailed explanation of “azimuth dependent reflection anisotropy spectroscopy” (ADRAS) [B. F. Macdonald and R. J. Cole, Appl. Phys. Lett. 80, 3527 (2002)] is presented. Experimental data and simulations are used to illustrate the greater information content of ADRAS compared to the standard reflection anisotropy technique. The application of ADRAS to
B. F. Macdonald, J. S. Law, R. J. Cole
openaire   +1 more source