We present a method for controlling the efficiency of direct third-harmonic generation in quasi-periodic optical superlattices by means of the electro-optic effect. The calculated results manifest that this method is extremely efficient for achieving high efficiency of direct third-harmonic generation in predesigned quasi-phase-matched coupled parametric processes and is feasible at any given fundamental intensity. In addition, we demonstrate that the electro-optic control approach is significantly better than the temperature-control method.
© 2003 Optical Society of America
Fei Xu, Jun Liao, Cheng-Shan Guo, Jing-Liang He, Hui-Tian Wang, S. N. Zhu, Zhenlin Wang, Y. Y. Zhu, and N. B. Ming, "Highly efficient direct third-harmonic generation based on control of the electro-optic effect in quasi-periodic optical superlattices," Opt. Lett. 28, 429-431 (2003)