1110.5695 (J. D. Rowley et al.)

Broadband terahertz pulse emission from ZnGeP_2    [PDF]

J. D. Rowley, J. K. Pierce, A. T. Brant, L. E. Halliburton, N. C. Giles, P. G. Schunemann, A. D. Bristow

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.

View original: http://arxiv.org/abs/1110.5695