Thermal coefficients of the expansion and refractive index in YAG

摘要

The thermal expansion coefficient and dn/dT are measured by interferometry techniques in undoped YAG below 300 K The thermal expansion coefficient at 125 K is measured to be 2.70 ×10↑(-6)K↑(-1) and dn/dT at 633 nm is 2.5 × 10↑(-6)K↑(-1), compared with 7×10↑(-6)K↑(-1) and 9×10↑(-6) K↑(-1) for these quantities at 300 K.#1999 Optical Society of America OCIS codes: 140.3380, 140.3580, 140.6810, 160.3380, 160.4760.