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Spectrum broadening of high-efficiency second harmonic generation in cascaded photonic crystal microcavities

Ren, Fang-Fang; Ye, Jiandong; Lu, Hai; Zhang, Rong; Zheng, Youdou


An effective approach is proposed to broaden the spectrum of high-efficiency second harmonic generation in a one-dimensional photonic crystal based on the cascaded structure. By controlling the thickness of the joint layer, it is possible to realize a flat-top or quasiflat-top impurity band centered at the fundamental wavelength due to mode splitting effect in coupled cavities. Simulation results reveal that the spectrum of generated second harmonic exhibits a hump-like or multi-peak profile...[Show more]

CollectionsANU Research Publications
Date published: 2013-01-14
Type: Journal article
Source: Optics express
DOI: 10.1364/OE.21.000756


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