title: Infrared properties of the extraordinary ray multiphonon processes in sapphire.
abstract: Transmission measurements using a linearly polarized diode laser, operating between 4.9 and 5.0 microm, and a sapphire sample with the c axis in the plane of the sample surface are used to determine the first multiphonon absorption coefficient measurements of the extraordinary ray.
authors.forename: M E
authors.initials: ME
authors.lastname: Thomas