期刊
OPTICS LETTERS
卷 36, 期 13, 页码 2593-2595出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.36.002593
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资金
- Australian Research Council
- Army Research Office [W911NF-10-2-0105]
We investigate theoretically the Cerenkov-type second-harmonic generation in two-dimensional bulk nonlinear photonic crystal with longitudinal modulation of the chi((2)) nonlinearity. We show that in this scheme the Cerenkov radiation can be achieved simultaneously at multiple directions with comparable intensities. The angles of emission are controllable by the spatial modulation of the nonlinearity. We propose a design of the periodically poled domain pattern, which maximizes the efficiency of the second-harmonic emission. (C) 2011 Optical Society of America
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