\textbf{Photoresponse of Thermally-Deposited and Spin-coated As}$_{\mathrm{\mathbf{2}}}$\textbf{S}$_{\mathrm{\mathbf{3}}}$\textbf{ Chalcogenide Glass Thin Films}

Chalcogenide glass thin films are known as promising materials for optical recording, photonics and other applications which require substantial photoinduced optical effects in UV-VIS region. However, some applications such as non-linear optical elements in the IR region of spectrum prefer thin film materials with stable optical properties in the visible range. Spin-coating technology for fabrication of As$_{\mathrm{2}}$S$_{\mathrm{3\thinspace }}$thin layers stable to the influence of visible light in wide intensity range was developed. The photoinduced effects in thermally deposited and spin-coated films were compared. It was shown that the position of the absorption edge of spin-coated samples does not change up to the intensities of LED light close to 160 mW/cm$^{\mathrm{2}}$. Raman studies of photoinduced structural transformations in both thermally deposited and spin-coated layer were studied. Structural stability of glass matrix for the spin-coated layers was confirmed. Computational model of the photostructural transformations is presented for the thermally deposited films.