title: Linear and nonlinear optical properties of ZnGeP2 crystal for infrared laser device applications: revisited.
abstract: Measurement of refractive indices in the spectral bands 9-11 microm and 1.32 microm from a cw CO2 laser and a Q-switched Nd:YAG laser, respectively, is reported in a ZnGeP2 crystal. A new set of Sellmeier dispersion relations has been derived from the measured refractive indices data in this crystal. Second-harmonic generation (SHG) of CO2 laser radiation in this crystal is also reported. It is also seen that the previously reported phase-matching data for others experiments in SHG and optical parametric devices is explained satisfactorily with this new set of Sellmeier dispersion relation.
authors.affiliation: Department of Physics, Laser Laboratory, Burdwan University, Burdwan 713 104, India.
authors.forename: Subhasis
authors.initials: S
authors.lastname: Das
authors.forename: Gopal C
authors.initials: GC
authors.lastname: Bhar
authors.forename: Sudipto
authors.initials: S
authors.lastname: Gangopadhyay
authors.forename: Chittaranjan
authors.initials: C
authors.lastname: Ghosh