Multiple second-harmonic waves in a nonlinear photonic crystal with fractal structure

We report the first poling fabrication of high quality LiNbO 3 nonlinear photonic crystal with H-shaped fractal superlattice. Due to the self-similarity character of this structure, the collinear quasi-phase matched second-harmonics at 10 wavelengths, such as 674, 592, 577, 544, 517, and 499 nm, hav...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2013-05, Vol.111 (2), p.183-187
Main Authors: Ma, B. Q., Ren, M. L., Ma, D. L., Li, Z. Y.
Format: Article
Language:English
Subjects:
Conversion
Crystal structure
Engineering
Fractal analysis
Fractals
Lasers
Nonlinearity
Optical Devices
Optics
Photonic crystals
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Wavelengths
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Summary:We report the first poling fabrication of high quality LiNbO 3 nonlinear photonic crystal with H-shaped fractal superlattice. Due to the self-similarity character of this structure, the collinear quasi-phase matched second-harmonics at 10 wavelengths, such as 674, 592, 577, 544, 517, and 499 nm, have been achieved in one crystal. Especially, for 499 nm second-harmonic laser spot, the normalized conversion efficiency can be as high as 0.53 %/mW.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-012-5277-1