Polarimetry analysis and optical contrast of Sb₂S₃ phase change material

Phase-change materials (PCMs) are the cornerstone for development of reconfigurable and programmable photonic devices. Sb 2 S 3 has been recently proposed as an interesting PCM due to its low-losses in visible near-IR. Here, we report use imaging polarimetry spectroscopic ellipsometry reveal directly measure optical properties both crystalline amorphous states obtained upon crystallization by annealing air chemical bath deposited . The Mueller Matrix polarimetric analysis reveals strong anisotropy crystallites which crystallize radial spherulitic domains contrast isotropy films. A refractive index ? n = 0.5 is demonstrated while maintaining at telecommunications C-band, i.e., ? 1550 nm.