Physics & Astronomy
Casey M. Schwarz
Chalcogenide glasses (ChGs) have excellent infrared (IR) transparency ranging up to 20 μm, large nonlinear refractive indices, and tailorable thermo-optic coefficients (dn/dT) that have great potential for applications in detectors, sensors, waveguides, imaging devices, photonic waveguides, acousto-optics, and optical devices. Spin and dip coating ChGs from solution is a low-cost, simple, and scalable method for depositing films over a large area. In this study, we utilize the novel approach of spin and dip coating to create thin ChG films of arsenic trisulfide (As2S3) and arsenic selenide (As2Se3). To realize the full potential of these films for device applications, their chemical, physical, and optical properties must be investigated in relation to their processing conditions and composition. In this work, bulk composition, ChG dissolution, spin and dip coating methods were studied and correlated to resulting film morphology, thickness, and transmission.
Vecchio, Paul, "Investigation of Spin and Dip-coating Phase Change Chalcogenide Materials as a Novel Technique for Coating and Functionalizing Conformal Optics" (2018). Physics and Astronomy Summer Fellows. 18.