title: Thermal expansion data for eight optical materials from 60 K to 300 K.
abstract: Coefficients of linear thermal expansion are reported, in the range 60 K to room temperature, for eight optical materials: Polytran potassium chloride and Polytran calcium fluoride-Harshaw; chemical-vapor-deposited (CVD) zinc sulfide and zinc selenide-Raytheon; germanium (single-crystal and polycrystal); crystalline magnesium fluoride, potassium dihydrogen phosphate (KDP), and lithium niobate-Harshaw. The last three are anisotropic crystals; thermal expansion was measured both parallel and perpendicular to the c axis.
authors.forename: J S
authors.initials: JS
authors.lastname: Browder
authors.forename: S S
authors.initials: SS
authors.lastname: Ballard