Raman spectrum of vitreous As2S3 |
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Authors: | RJ KobliskaSA Solin |
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Institution: | James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637, U.S.A. |
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Abstract: | The spontaneous Stokes and anti-Stokes Raman spectrum of vitreous As2S3 is reported. The spectrum was recorded with both HeNe and Ar ion laser excitation lines in the transmission and reflection modes respectively. Spectra were recorded at various temperatures between 20°K and 465°K, the softening temperature of As2S3 glass. It is shown conclusively that the quasicontinous scattering observed at low wave number shifts (< 100 cm−1) is real in agreement with the theory of Shuker and Gammon and not an arbitrary background as previously reported. An approximate density of vibrational states is deduced from the polarized Raman spectra. |
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