Share Email Print
cover

Proceedings Paper

Negative refractive behaviors of 2D triangular-lattice photonic crystals by structure of SiO2/TiO2 layers
Author(s): Mengxue Li; Mengnan Liu; Chengyi Jiang; Tongtong Liu; Peng Sun; Yong Wan
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this paper, we propose a two-dimensional (2-D) triangular lattice photonic crystal plate by close-packed SiO2/ TiO2 layers with the stacking mode of ABABABA. By using the finite-difference time-domain (FDTD) method, negative refraction of a single Gaussian beam incident plate with different angles are respectively demonstrated; clear image spots of a point source with normalized frequency ω=0.3605(2πc/a) vertical incident media plate are obtained in the image plane. It can be found that the imaging properties are as same as the isotropic homogeneous medium with refractive index n=-1. The measurement results show that when the distance between the image and the upper surface of the sample V is 5.12a, 3.09a and 1.15a, the distance between the source and the lower surface of the sample U is a, 3a and 5a, respectively. This means that the sum of U and V is mostly equal to the thickness of the plate L and the negative effect of near-perfect lens is realized. This proposed structure with negative refraction properties may have great applications for the design of photonic crystal focusing devices.

Paper Details

Date Published: 12 January 2018
PDF: 6 pages
Proc. SPIE 10620, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 106201F (12 January 2018); doi: 10.1117/12.2295148
Show Author Affiliations
Mengxue Li, Qingdao Univ. (China)
Mengnan Liu, Qingdao Univ. (China)
Chengyi Jiang, Qingdao Univ. (China)
Tongtong Liu, Qingdao Univ. (China)
Peng Sun, Qingdao Univ. (China)
Yong Wan, Qingdao Univ. (China)


Published in SPIE Proceedings Vol. 10620:
2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology
Guohai Situ; Xun Cao; Wolfgang Osten; Liquan Dong, Editor(s)

© SPIE. Terms of Use
Back to Top