標題: Broad multiwavelength second-harmonic generation from two-dimensional chi((2)) nonlinear photonic crystals of tetragonal lattice structure
作者: Peng, LH
Hsu, CC
Kung, AH
交大名義發表
National Chiao Tung University
關鍵字: nonlinear photonic crystals;quasi-phase-matching;second-harmonic generation (SHG)
公開日期: 1-九月-2004
摘要: We investigate the effects of lattice spacing and domain-filling ratio on the wavelength dependence in second-harmonic generation (SHG) from two-dimensional chi((2)) nonlinear photonic crystals (2-D NPC) on lithium niobate. Spectral coverage of 150 and 200 nm around 1.5 and 1.9 mum in quasi-phase-matched (QPM) SHG is obtained by angular rotation of the NPC with a lattice periodicity of 20 x 20 and 29.5 x 29.5 mum(2), respectively. The SHG signals are shown to have off-axial propagation directions determined by the incident wavelength and the QPM vector. The intensity of the high-order reciprocal-lattice-vector (G(mn))-assisted SHG signal is shown to depend on the domain-filling ratio. These observations are attributed to the unique dispersion of G(mn) together with the nonzero chi((2)) (G(mn)) nonlinearity in the 2-D QPM-NPC having a tetragonal lattice structure.
URI: http://dx.doi.org/10.1109/JSTQE.2004.836001
http://hdl.handle.net/11536/26433
ISSN: 1077-260X
DOI: 10.1109/JSTQE.2004.836001
期刊: IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
Volume: 10
Issue: 5
起始頁: 1142
結束頁: 1148
顯示於類別:期刊論文


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