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 |