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An effect of introduced dysprosium impurity and temperature on absorption spectra of As2S3 glasses is investigated. Absorption lines due to the electron transitions between dysprosium levels were observed in absorption (K), wavelength modulated transmission (ΔT/Δλ) and photoluminescence (PL) spectra at temperatures range 10 - 300 K. It was established that in As2S3:Dy glasses light waves of right and left circular polarization have different refractive indices (n- ≠ n+). The circularly polarized waves propagate with different velocities and interfere. Values of n-, n+ and Δn = n+ - n- were determined from interference fringes..
Chalcogenide glasses, Optical spectroscopy, Dysprosium impurity, Refractive index.
N. SYRBU, V. ZALAMAI, Optical properties of As2S3 glasses doped with Dy, Optoelectronics and Advanced Materials - Rapid Communications, 13, 9-10, September-October 2019, pp.530-534 (2019).
Submitted at: March 25, 2019
Accepted at: Oct. 9, 2019