Optical properties of Tl3SbS3 acousto-optic crystals

✍ Scribed by N.N. Syrbu; V.V. Dorogan; L.L. Nemerenco; T.S. Vieru

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 204 KB
• Volume: 259
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2005.09.076

✦ Synopsis

Optical properties of acousto-optical material Tl 3 SbS 3 were investigated at the fundamental absorption edge. The basic (n = 1) and excited (n = 2, 3) exciton states were obtained from the k-modulated reflection spectra for polarizations E?c at 10 K. Taking into account the spatial dispersion we determined the parameters of excitons by calculating the spectra shapes of k-modulated reflection of line n = 1 and estimated values of the zone-translation masse and the reduced effective masse of excitons, the effective masse of electrons ðm à C1 ¼ 0:12m 0 Þ, heavy ðm à V1 ¼ 0:88m 0 Þ and light ðm à V2 ¼ 0:196m 0 Þ holes.