scholarly journals Optical properties of mesoporous photonic crystals, filled with dielectrics, ferroelectrics and piezoelectrics

2017 ◽  
Vol 07 (06) ◽  
pp. 1750038 ◽  
Author(s):  
V. S. Gorelik ◽  
Dongxue Bi ◽  
Guang Tao Fei
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Narrow Band ◽  
Stop Band ◽  
Three Dimensional ◽  
Optical Filters ◽  
Bragg Diffraction ◽  
Exciting Light ◽  
One Dimensional ◽  
Light Filters

At present, it is very important to create new types of mirrors, nonlinear light frequency transformers and optical filters with controlled optical properties. In this connection, it is of great interest to study photonic crystals. Their dielectric permittivity varies periodically in space with a period permitting Bragg diffraction of light. In this paper, we have investigated the optical properties of mesoporous three-dimensional (3D) opal-type and one-dimensional (1D) anodic alumina photonic crystals, filled with different dielectrics, ferroelectrics and piezoelectrics. We have compared the optical properties of initial mesoporous photonic crystals and filled with different substances. The possibility of mesoporous photonic crystals using selective narrow-band light filters in Raman scattering experiments and nonlinear mirrors has been analyzed. The electromagnetic field enhancing in the case of exciting light frequency close to the stop band edges has been established. The optical harmonics and subharmonics generation in mesoporous crystals, filled with ferroelectrics and piezoelectrics was proposed.

Effect of Double Defects on Transmission Spectra of One-Dimensional Photonic Crystals

2010 ◽  
Vol 663-665 ◽  
pp. 725-728 ◽  
Author(s):  
Yuan Ming Huang ◽  
Qing Lan Ma ◽  
Bao Gai Zhai ◽  
Yun Gao Cai
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Theoretical Calculations ◽  
Stop Band ◽  
Band Gaps ◽  
Characteristic Matrix ◽  
Frequency Range ◽  
Defect Band ◽  
One Dimensional ◽  
The One

Considered the model of the one-dimensional photonic crystals (1-D PCs) with double defects, the refractive indexes (n2’, n3’ and n2’’, n3’’) of the double defects were 2.0, 4.0 and 4.0, 2.0 respectively. With parameter n2=1.5, n3=2.5, by theoretical calculations with characteristic matrix method, the results shown that for a certain number (14 was taken) of layers of the 1-D PCs, when the double defects abutted, there was a defect band gap in the stop band gap, while when the double defects separated, there occurred two defect band gaps in the stop band gap; besides, with the separation of the two defects, the transmittance of the double defect band gaps decreased gradually. In addition, in this progress, the frequency range of the stop band gap has a little increase from 0.092 to 0.095.

scholarly journals Sub-nanometer precision modification of the optical properties of three-dimensional polymer-based photonic crystals

2004 ◽  
Vol 2 (3) ◽  
pp. 191-198 ◽  
Author(s):  
Georg von Freymann ◽  
Timothy Y.M. Chan ◽  
Sajeev John ◽  
Vladimir Kitaev ◽  
Geoffrey A. Ozin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Three Dimensional

Transmission Spectra of One-Dimensional Photonic Crystals with Single Defect in Different Locations

2010 ◽  
Vol 663-665 ◽  
pp. 717-720 ◽  
Author(s):  
Bao Gai Zhai ◽  
Yun Gao Cai ◽  
Qing Lan Ma ◽  
Yuan Ming Huang
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Turning Point ◽  
Stop Band ◽  
Approximate Symmetry ◽  
Transmission Spectra ◽  
Defect Band ◽  
Transmittance Spectra ◽  
One Dimensional ◽  
Single Defect

The transmittance spectra of one-dimensional photonic crystals (1-D PCs) with single defect in different location have been calculated. Defined the parameter N as the number of the layers located to the left of the single defect, set 13 as the number of the total layers of the 1-D PCs included the defect, during the course of the number of N increased from 0 to 12, as it upped to 3, there occurred defect band gap in the stop band gap, and when N upped to 12, the defect band gap disappeared; besides, the defect band gap is at frequencies between 0.3000~0.3090, most of them are at the frequencies around 0.3020. In addition, the transmittance has a turning point at the parameter N=7, that is to say, there has an approximate symmetry in transmittance when the parameter N increased from 3 to 11.

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