A Two-Dimensional Nonlinear Photonic Crystal with a Rectangular Loop
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Abstract
A novel model of two-dimensional periodically poled lithium niobate designed for second harmonic generation of 1064 nm is proposed, in which a rectangular light route is used. The effective length of the sample is longer than the sample real length by 5/3 21/2 times. The conversion efficiency enhances greatly without prolonging the periodically poled crystal length.
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