12 March 2013 Terahertz generation in quasi-phase-matched GaAs wafers by pulse CO2 laser
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An coherent terahertz (THz) source was reported by quasi-phase matched different frequency generation in a stacked GaAs wafers pumped by one CO2 laser with dual-wavelength output. The THz generation was increased with the increase of the number of GaAs wafers. The maximum single pulse energy of 12 nJ was generated at a frequency of 0.94 THz (319 μm) by using ten GaAs wafers, corresponding to a peak output power 200 mW
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Zhiming Rao, Zhiming Rao, Xinbing Wang, Xinbing Wang, Duluo Zuo, Duluo Zuo, "Terahertz generation in quasi-phase-matched GaAs wafers by pulse CO2 laser", Proc. SPIE 8604, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII, 860415 (12 March 2013); doi: 10.1117/12.2002928; https://doi.org/10.1117/12.2002928

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