Resonance Raman scattering in CuGaxAl1-xS2 crystals
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2018-06-22 19:38
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SYRBU, Nicolae, TIGINYANU, Ion, URSAKI, Veacheslav, DOROGAN, Andrei. Resonance Raman scattering in CuGaxAl1-xS2 crystals. In: Journal of Optics A: Pure and Applied Optics, 2008, vol. 10, p. 0. ISSN 1464-4258. DOI: https://doi.org/10.1088/1464-4258/10/12/125002
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Journal of Optics A: Pure and Applied Optics
Volumul 10 / 2008 / ISSN 1464-4258 /ISSNe 1741-3567

Resonance Raman scattering in CuGaxAl1-xS2 crystals

DOI: https://doi.org/10.1088/1464-4258/10/12/125002

Pag. 0-0

Syrbu Nicolae1, Tiginyanu Ion12, Ursaki Veacheslav2, Dorogan Andrei1
 
1 Technical University of Moldova,
2 Institute of Applied Physics, Academy of Sciences of Moldova
 
Disponibil în IBN: 6 aprilie 2018


Rezumat

The change of polarization of the resonant Raman scattering lines is studied in CuGaxAl1-xS2 crystals with x equal to 1, 0.95 and 0.9 assuming resonance conditions with 4880 and 4765 Ar laser lines. Linear and circular depolarization of the emission under the excitation by polarized light is observed. The depolarization of LO-phonon resonance Raman scattering (RRS) lines is found to occur practically in the same way for phonons with different symmetries. This observation is explained by the participation of polaritons in the processes of RRS as initial and final states.

Cuvinte-cheie
Chalcopyrites, Exciton-mediated interactions, Resonant Raman scattering, photoluminescence, reflection spectra