Directional dependence of the second harmonic response in two-dimensional nonlinear photonic crystals

2010 ◽  
Vol 96 (26) ◽  
pp. 261111 ◽  
Author(s):  
P. Molina ◽  
M. O. Ramírez ◽  
B. J. García ◽  
L. E. Bausá
Keyword(s):  
Photonic Crystals ◽  
Second Harmonic ◽  
Two Dimensional ◽  
Directional Dependence ◽  
Harmonic Response ◽  
Nonlinear Photonic Crystals

Research on Second Harmonic Generation in Two-Dimensional Periodical Nonlinear Photonic Crystals Based on Intelligent Materials

2011 ◽  
Vol 282-283 ◽  
pp. 716-720
Author(s):  
Jing Juan Li ◽  
Li Wang
Keyword(s):  
Photonic Crystals ◽  
Harmonic Generation ◽  
Conversion Efficiency ◽  
Second Harmonic ◽  
Harmonic Wave ◽  
Square Lattice ◽  
Two Dimensional ◽  
High Conversion Efficiency ◽  
Nonlinear Photonic Crystals ◽  
Different Order

The works are focused on finding out proper shape of reversed domains to obtain effective harmonic generations with high conversion efficiency. The conversion efficiency of second harmonic wave in two-dimensional nonlinear photonic crystals consisting of square lattice and reversed domains of various shapes are studied numerically. The shapes of reversed domains are extended from circle, square to ellipse and rectangle. The conversion efficiency of different order quasi-phase matched process can be maximized by adjusting the orientation of noncircular reversed domains. Moreover, a cross-shaped reversed domain is utilized to improve the conversion efficiency of two-order non-collinear quasiphase matching.

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