Optical activity in Mn doped As2S3 glasses

Abstract

Spectral dependences of transmittance (T) and wavelength modulated transmittance (ΔT/Δλ) of As2S3 layers doped by manganese (Mn) of different concentrations (0 – 0.5 %) were investigated at temperatures from 10 K to 300 K. Photoluminescence bands at 1.762 eV, 2.107 eV and 2.282 eV due to transition 4A2g(4F) → 4Eg(2G), 4T1g(4G) → 6A1g(4F) and 4T2g → 6A1g of Mn ions, respectively were observed at argon laser excitation. On the luminescence spectra the absorption bands of electron transitions 6A1g(4F) → 4T1g(4G) were recognized. The magnitude of refractive index (n) of Mn (0.1 % and 0.5 %) ions doped As2S3 layers in low-energy range (1.6–1.9 eV) does not change at temperature decreasing from 300 to 10 K