Chinese Optics Letters, Volume. 10, Issue s2, S21904(2012)
Nonlinear photonic crystals with two-dimensional quasi-periodic and fractal superlattices
High quality z-cut LiNbO3 nonlinear photonic crystals with two-dimensional (2D) dodecagonal and fractal superlattices are successfully fabricated by applying the high voltage pulses. By collinear quasi-phase matching technique, second-harmonics at five wavelengths and ten wavelengths are observed simultaneously in one poled crystal, respectively. The same results can be obtained by rotating around the z axis by integrals of 30o in quasi-periodically poled crystal. In fractal nonlinear photonic crystal, the normalized conversion efficiency can be as high as 0.53%/mW for 499-nm second-harmonic laser spot.
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Boqin Ma, Mingliang Ren, Zhiyuan Li. Nonlinear photonic crystals with two-dimensional quasi-periodic and fractal superlattices[J]. Chinese Optics Letters, 2012, 10(s2): S21904
Category: Nonlinear Optics
Received: May. 25, 2012
Accepted: Jun. 25, 2012
Published Online: Dec. 19, 2012
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