Zhang C, Wei H, Zhu Y Y, Wang H T, Zhu S N, Ming N B
Opt Lett. 2001 Jun 15;26(12):899-901. doi: 10.1364/ol.26.000899.
The quasi-periodic optical superlattice is a promising material for use in optical frequency conversion. We propose a method for designing a quasi-periodic structure for efficient third-harmonic generation (THG) at any given wavelength. With this method we have made a LiTaO(3) sample in which 27% THG at 0.48microm was achieved, together with a series of highly efficient multiwavelength second-harmonic generation outputs. The result is in good agreement with the theoretical prediction.
