12 March 2013 The widely tunable THz generation in QPM-GaAs crystal pumped by a near-degenerate dual-wavelength KTP OPO at around 2.127 μm
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Abstract
We report a widely tunable terahertz source by using QPM-GaAs crystals pumped by a near-degenerate dual-wavelength KTP OPO around 2.127μm, based on difference frequency generation (DFG). The tunable THz radiation from 0.06 THz to 3.34 THz has been achieved in QPM-GaAs crystal with coherence length of 650 μm. The maximum output THz energy is 45 nJ with the peak power of 10 W at 1.68 THz, corresponding to the energy conversion efficiency of 5×10-6 and the photon conversion efficiency of about 0.08%.
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Degang Xu, Degang Xu, Wei Shi, Wei Shi, Kai Zhong, Kai Zhong, YuYe Wang, YuYe Wang, Pengxiang Liu, Pengxiang Liu, Jianquan Yao, Jianquan Yao, } "The widely tunable THz generation in QPM-GaAs crystal pumped by a near-degenerate dual-wavelength KTP OPO at around 2.127 μm", Proc. SPIE 8604, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII, 86040E (12 March 2013); doi: 10.1117/12.2006030; https://doi.org/10.1117/12.2006030
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