期刊
OPTICS EXPRESS
卷 20, 期 28, 页码 29940-29948出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.029940
关键词
-
类别
资金
- EU FP7 NoE Nanophotonics4Energy Grant [248855]
- Spanish MICINN [CSD2007-0046, MAT2009-07841, MAT2010-17443]
- Comunidad de Madrid [S2009/MAT-1756 PHAMA]
Broadly tunable multiple high-harmonic conical beams have been generated by means of a multistep.(2) cascade processes in a two dimensional nonlinear photonic crystal. The nonlinear structure consists of a square lattice of inverted hexagonal domains with diameters and distances between domains as low as 1 mu m. The large number of reciprocal lattice vectors provided by both the square nonlinear structure and the hexagonal shaped domains, along with imperfections on the size and shape of the individual domains make possible the simultaneous generation of second up to fifth harmonic conical beams in a single nonlinear structure by using different types of phase matching geometries. The frequency response can be tuned in an extremely large spectral range, and continuous generation of nonlinear conical beams covering the whole visible spectral region can be achieved. Further, the same photon energy can be generated at different orders, so that concentrically emitted conical beams with angular dispersion as large as Delta theta = 50 degrees can be observed. The results highlight the significance of highly controlled engineered 2D nonlinear structures to generate advanced multi-photon devices with large spatial and spectral tunable response. (C) 2012 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据