title: Broadband terahertz pulse emission from ZnGeP2.
abstract: Optical rectification is demonstrated in (110)-cut ZnGeP(2) (ZGP) providing broadband terahertz (THz) generation. The source is compared to both GaP and GaAs over a wavelength range of 1150 nm to 1600 nm and peak-intensity range of 0.5 GW/cm(2) to 40 GW/cm(2). ZGP peak-to-peak field amplitude is larger than in the other materials due to either lower nonlinear absorption or larger second-order nonlinearity. This material is well suited for broadband THz generation across a wide range of infrared excitation wavelengths.
authors.affiliation: Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Rowley
authors.forename: J K
authors.initials: JK
authors.lastname: Pierce
authors.forename: A T
authors.initials: AT
authors.lastname: Brant
authors.forename: L E
authors.initials: LE
authors.lastname: Halliburton
authors.forename: N C
authors.initials: NC
authors.lastname: Giles
authors.forename: P G
authors.initials: PG
authors.lastname: Schunemann
authors.forename: A D
authors.initials: AD
authors.lastname: Bristow