Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315, USA.
Opt Lett. 2012 Mar 1;37(5):788-90. doi: 10.1364/OL.37.000788.
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.
在（110）切向的 ZnGeP(2)（ZGP）中展示了光整流，从而实现了宽带太赫兹（THz）产生。将该光源与 GaP 和 GaAs 进行了比较，波长范围为 1150nm 至 1600nm，峰值强度范围为 0.5GW/cm(2) 至 40GW/cm(2)。由于较低的非线性吸收或较大的二阶非线性，ZGP 的峰值-峰值场幅度大于其他材料。这种材料非常适合在很宽的红外激发波长范围内产生宽带太赫兹。
