Abstract

Terahertz (THz) generation by periodically-poled KTiOPO₄ (PPKTP) with a quasi-phase-matching scheme based on cascaded difference frequency generation (DFG) processes is theoretically analyzed. The cascaded Stokes interaction processes and the cascaded anti-Stokes interaction processes are investigated from coupled wave equations. THz intensities and quantum conversion efficiency are calculated. Compared with non-cascaded DFG processes, THz intensities from 10-order cascaded DFG processes are increased to 5.53. The quantum conversion efficiency of 479.4% in cascaded processes, which exceeds the Manley-Rowe limit, can be realized.

© 2017 Optical Society of Korea

Theoretical exploration of sensitive terahertz detection by cascaded difference-frequency generation

Zhongyang Li, Chenxu Shi, Kaiwu Wang, Xinghai Chen, Hongtao Zhang, Zhiliang Chen, Sheng Yuan, Pibin Bing, and Jianquan Yao
J. Opt. Soc. Am. B 40(3) 535-541 (2023)

Ultraviolet generation by first-order frequency doubling in periodically poled KTiOPO₄

S. Wang, V. Pasiskevicius, F. Laurell, and H. Karlsson
Opt. Lett. 23(24) 1883-1885 (1998)

High efficiency cascaded third-harmonic generation in a quasi-periodically poled KTiOPO₄ crystal

Augustin Vernay, Lucas Bonnet-Gamard, Véronique Boutou, Sivan Trajtenberg-Mills, Ady Arie, and Benoît Boulanger
OSA Continuum 3(6) 1536-1544 (2020)

High-efficiency terahertz wave generation in aperiodically poled lithium niobate by cascaded difference frequency generation

Zhongyang Li, Xiangqian Sun, Hongtao Zhang, Yongjun Li, Bin Yuan, Binzhe Jiao, Jia Zhao, Lian Tan, Pibin Bing, Zhan Wang, and Jianquan Yao
J. Opt. Soc. Am. B 37(8) 2416-2422 (2020)

Efficient third-harmonic generation in partly periodically poled KTiOPO₄ crystal

Xiaodong Mu and Yujie J. Ding
Opt. Lett. 26(9) 623-625 (2001)