Raman scattering from sapphire fibers
- 1 December 1989
- journal article
- Published by Wiley in Journal of Raman Spectroscopy
- Vol. 20 (12) , 785-788
- https://doi.org/10.1002/jrs.1250201206
Abstract
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 bothA1gandEgsymmetry modes were observed under tensile uniaxial stress parallel to thecaxis. The unexpected shifts of theEgmodes may be attributable to effects due to restricted dimensions.Keywords
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