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Raman scattering from sapphire fibers
Author(s) -
Jia Weiyi,
Yen W. M.
Publication year - 1989
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/jrs.1250201206
Subject(s) - raman spectroscopy , raman scattering , sapphire , materials science , signal (programming language) , optics , phonon , molecular physics , symmetry (geometry) , laser , condensed matter physics , chemistry , physics , geometry , mathematics , computer science , programming language
An index matching technique for Raman scattering from sapphire fibers is presented; the technique is shown to be effective in suppressing the stray laser background and leads to an improved signal‐to‐noise ratio of the Raman signal. Red shifts of phonon frequencies for both A 1g and E g symmetry modes were observed under tensile uniaxial stress parallel to the c axis. The unexpected shifts of the E g modes may be attributable to effects due to restricted dimensions.