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Dynamics of the Raman background decay
Author(s) -
Splett A.,
Splett Ch.,
Pilz W.
Publication year - 1997
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199707)28:7<481::aid-jrs112>3.0.co;2-l
Subject(s) - raman spectroscopy , superposition principle , laser , wavelength , annealing (glass) , analytical chemistry (journal) , chemistry , molecular physics , materials science , optics , physics , chromatography , quantum mechanics , composite material
The Raman background, a broad emission, sometimes of strong intensity, is mostly reduced by a laser burnout to achieve a better quality of the normal Raman spectra with narrow bands. The time dependence of the decrease in the background due to laser illumination at a wavelength of 632.8 nm at room temperature was investigated. A short time effect based on water desorption from the illuminated sample and a long time effect which may reflect annealing processes of crystalline defects were found. Generally the Raman background decay (RBD) can be expressed as a superposition of two time‐dependent exponential functions. © 1997 John Wiley & Sons, Ltd