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Temperature-dependent refractive index of CaF2 and Infrasil 301
Douglas B. Leviton, Bradley J. Frey, Timothy J. Madison
In order to enable high quality lens designs using calcium fluoride (CaF2) and Heraeus Infrasil 301 (Infrasil) for cryogenic operating temperatures, we have measured the absolute r…
Temperature-dependent absolute refractive index measurements of synthetic fused silica
Douglas B. Leviton, Bradley J. Frey
Using the Cryogenic, High-Accuracy Refraction Measuring System (CHARMS) at NASA's Goddard Space Flight Center, we have measured the absolute refractive index of five specimens take…
High accuracy, absolute, cryogenic refractive index measurements of infrared lens materials for JWST NIRCam using CHARMS
Douglas B. Leviton, Bradley J. Frey, Todd Kvamme
The refractive optical design of the James Webb Space Telescope (JWST) Near Infrared Camera (NIRCam) uses three infrared materials in its lenses: LiF, BaF2, and ZnSe. In order to p…
Temperature dependent refractive index of silicon and germanium
Bradley J. Frey, Douglas B. Leviton, Timothy J. Madison
Silicon and germanium are perhaps the two most well-understood semiconductor materials in the context of solid state device technologies and more recently micromachining and nanote…