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Highly efficient terahertz generation from periodically-poled RbTiOPO4

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Abstract

Terahertz (THz) generation by periodically-poled RbTiOPO4 (PPRTP) with a quasi-phase-matching scheme based on cascaded difference frequency generation (DFG) processes is theoretically analyzed. The cascaded Stokes and anti-Stokes interaction processes are investigated from coupled wave equations. The THz intensities and quantum conversion efficiency are calculated. Compared with that of non-cascaded DFG processes, the THz intensity in 7-order cascaded DFG processes is increased to 2.95 times. The quantum conversion efficiency of 149.9% in cascaded processes can be realized, which exceeds the Manley-Rowe limit.

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Correspondence to Zhong-yang Li  (李忠洋).

Additional information

This work has been supported by the National Natural Science Foundation of China (Nos.61201101, 61601183 and 61205003), the Young Backbone Teachers in University of Henan Province (No.2014GGJS-065), the Foundation and Advanced Technology Research Program of Henan Province (No.162300410269), and the Program for Innovative Research Team (in Science and Technology) in University of Henan Province (No.16IRTSTHN017).

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Li, Zy., Wang, Mt., Wang, Sl. et al. Highly efficient terahertz generation from periodically-poled RbTiOPO4 . Optoelectron. Lett. 13, 127–130 (2017). https://doi.org/10.1007/s11801-017-6253-0

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  • DOI: https://doi.org/10.1007/s11801-017-6253-0

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