Broadband terahertz pulse emission from ZnGeP2 |
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Authors: | Rowley J D Pierce J K Brant A T Halliburton L E Giles N C Schunemann P G Bristow A D |
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Institution: | Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315, USA. |
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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. |
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