Abstract
Cascaded optical parametric processes based on periodically poled KTiOPO4 (PPKTP) generating a tunable terahertz (THz) wave are analyzed. The forward and backward cascaded optical parametric processes are theoretically analyzed. Tuning characteristics of the THz wave that relate to the parameters of the pump wavelength and the grating period of PPKTP are numerically simulated. The gain and absorption characteristics of the generating THz wave are deduced in the situation of quasi-phase-matching configuration. The characteristics of PPKTP for THz wave parametric oscillator (TPO) are compared with periodically poled LiNbO3 (PPLN). The analyses indicate that PPKTP is more suitable than PPLN for TPO.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos. 61201101 and 61205003), Young Backbone Teachers in University of Henan Province (Grant No. 2014GGJS-065), Foundation and Advanced Technology Research Program of Henan Province (Grant No. 162300410269), and Program for Innovative Research Team (in Science and Technology) in University of Henan Province (Grant No. 16IRTSTHN017).
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Li, Z., Wang, M., Wang, S. et al. Investigation on cascaded optical parametric processes using periodically poled KTiOPO4 crystal. J Opt 48, 160–165 (2019). https://doi.org/10.1007/s12596-019-00532-2
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DOI: https://doi.org/10.1007/s12596-019-00532-2