无衍射分立光子晶格

J4 ›› 2015, Vol. 32 ›› Issue (4): 478-485.

无衍射分立光子晶格

林蓉

菏泽学院物理与电子工程系，山东菏泽 274015

收稿日期:2014-12-26 修回日期:2015-02-13 出版日期:2015-07-28 发布日期:2015-08-04
通讯作者: 林蓉（1989-），女，山东定陶人，硕士，助教，主要研究方向为非线性光学. E-mail:hzxywlxlr@163.com
基金资助:
Supported by the National Science Foundation of China under Grant (11447145)

Nondiffracting discrete photonic lattice

LIN Rong

Department of Physics and Electronic Engineering, Heze University, Heze 274015, China

Received:2014-12-26 Revised:2015-02-13 Published:2015-07-28 Online:2015-08-04

摘要/Abstract

摘要：

在加压光折变掺铈铌酸锶钡(SBN)晶体中观察了由无衍射分立光束所产生的光子晶格。重点实验观察了三束光干涉和六束光干涉两种情况下所产生的光子晶格，并利用远场衍射图、布里渊区光谱图和傅里叶空间频谱图比较了这两种光子晶格的相同点和区别，并且进行了理论分析。结果表明由三束光干涉产生的光子晶格更均匀稳定。另外，又分别模拟了由四光束干涉、五光束干涉、七光束干涉、八光束干涉、九光束干涉和十光束干涉这几种情况下所获得的光子晶格的传输图。

关键词: 非线性光学, 光子晶格, 无衍射光束, 布里渊区光谱图, 远场衍射图

Abstract:

The photonic lattice induced by nondiffracting discrete beam was observed in an externally biased cerium doped strontium barium niobate(SBN) photorefractive crystal. And the photonic lattice induced by the interference of three beams and six beams was observed especially. Some differences and similarities of the photonic lattice in these two cases were analyzed by far-field diffraction pattern, Brillouin-zone spectroscopy and Fourier spatial spectrum. And it carried on some theoretical analysis. The results show that the photonic lattice induced by the interference of three beams is more uniform and more stable. In addition, the transmission diagrams of the photonic lattice induced by the interference of four beams, five beams, seven beams, eight beams, nine beams and ten beams were simulated respectively.

Key words: nonlinear optics, photonic lattice, nondiffracting beam, Brillouin-zone spectroscopy, far-field diffraction pattern

中图分类号:

O437

林蓉. 无衍射分立光子晶格[J]. J4, 2015, 32(4): 478-485.

LIN Rong. Nondiffracting discrete photonic lattice[J]. J4, 2015, 32(4): 478-485.

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