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Conferences > ISUPTW > 2018 > WI > WI36

High-energy and ultra-wideband tunable terahertz source with DAST crystal via difference frequency generation

Yixin He, Yuye Wang, Degang Xu, Meitong Nie, Chao Yan, Longhuang Tang, Jia Shi, Dexian Yan, Hongxiang Liu, Bing Teng, and Jianquan Yao

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Abstract

We have demonstrated a high-energy and broadly tunable monochromatic terahertz (THz) source based on difference frequency generation (DFG) in DAST crystal. The THz frequency was tuned randomly in the range of 0.3-19.6 THz. The highest energy of 870 nJ/pulse was obtained at 18.9 THz under the intense pump intensity of 247 MW/cm2. The THz energy emitted from the DAST crystal was related to the damage of the crystal. Furthermore, tests of transmission spectroscopy of four typical samples were demonstrated with this ultra-wideband THz source.

© 2018 The Author(s)

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