| Conţinutul numărului revistei |
| Articolul precedent |
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 SM ISO690:2012STAMOV, Ivan, SYRBU, Nicolae, URSACHI, Veaceslav, ZALAMAI, Victor. Birefringence and excitonic spectra of TlGaS2 crystals. In: Optics Communications, 2013, vol. 298-299, pp. 145-149. ISSN 0030-4018. DOI: https://doi.org/10.1016/j.optcom.2013.02.019 |
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  Optics Communications |
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| Volumul 298-299 / 2013 / ISSN 0030-4018 | ||||||
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| DOI:https://doi.org/10.1016/j.optcom.2013.02.019 | ||||||
| Pag. 145-149 | ||||||
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The anisotropy of transmission spectra was investigated in TlGaS 2 crystals. An intensive transmission line was found in samples placed between two crossed polarizers. Ground and excited states of excitons were detected in reflectivity spectra of TlGaS2 crystals measured in E∥a and E∥b polarizations. The reflection spectra of excitons were calculated according to dispersion equations, and the main parameters of excitons and energy bands were determined in the center of the Brillouin zone. The refractive indices na and nb were estimated for E∥a and E∥b polarizations. |
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| Cuvinte-cheie Band structure, Excitons, Optical constants, Semiconductor compound |
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