Optical characteristics of different Bragg planes of 3D polystyrene photonic crystals in the LU and LK path of the first Brillouin zone of close packed fcc structure with large band gap depth and steeper band edges

2010 ◽  
Author(s):  
Shadak Alee K. ◽  
Carina B. M. ◽  
Sriram G. ◽  
Narayana Rao Desai
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Brillouin Zone ◽  
Optical Characteristics ◽  
Fcc Structure

Fabrication of FCC Structure Colloidal Photonic Crystals and Characteration of Band-Gap Measured

2009 ◽  
Vol 29 (10) ◽  
pp. 2905-2908
Author(s):  
闫海涛 Yan Haitao ◽  
王鸣 Wang Ming ◽  
葛益娴 Ge Yixian ◽  
喻平 Yu Ping ◽  
刘青 Liu Qing
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Colloidal Photonic Crystals ◽  
Fcc Structure

Effects of Asymmetrical Rotated Rectangular Basis in Two-Dimensional Gyromagnetic Photonic Crystals

2013 ◽  
Vol 834-836 ◽  
pp. 885-888
Author(s):  
Hui Ling Sun ◽  
Qing Bo Li ◽  
Hua Bao Chen ◽  
Bao Ding Chen
Keyword(s):  
Photonic Crystals ◽  
Band Structure ◽  
Band Gap ◽  
Brillouin Zone ◽  
Square Lattice ◽  
High Symmetry ◽  
Two Dimensional ◽  
Symmetry Line

The twist effects of the bands during the rotation of rectangular bases are analysed in two-dimensional gyromagnetic photonic crystals with a square lattice. We find that extrema’s position have been dislocated from the high-symmetry line in the whole area of the first Brillouin zone (BZ), resulting in erroneous values for the band gap. These make us to calculate the whole first BZ to obtain the authentic band structure instead of boundary calculation.

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.

3-Dimensional Photonic Crystals at Optical Wavelengths

1998 ◽  
Vol 07 (02) ◽  
pp. 181-200 ◽  
Author(s):  
S. G. Romanov
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Photonic Band Gap ◽  
Stop Band ◽  
High Refractive Index ◽  
3 Dimensional ◽  
Optical Wavelength ◽  
Photonic Band Gap Materials ◽  
Optical Wavelengths ◽  
Photonic Band

Different experimental strategies towards the 3-dimensional photonic crystals operating at optical wavelength are classified. The detailed discussion is devoted to the recent progress in photonic crystals fabricated by template method — the photonic band gap materials on the base of opal. The control of photonic properties of opal-based gratings is achieved through impregnating the opal with high refractive index semiconductors and dielectrics. Experimental study demonstrated the dependence of the stop band behaviour upon the type of impregnation (complete or partial) and showed a way for approaching complete photonic band gap. The photoluminescence from opal- semiconductor gratings revealed suppression of spontaneous emission in the gap region with following enhancement of the emission efficiency at the low-energy edge of the gap.

scholarly journals Band gap of hexagonal 2D photonic crystals with elliptical holes recorded by interference lithography

2006 ◽  
Vol 14 (11) ◽  
pp. 4873 ◽  
Author(s):  
F. Quiñónez ◽  
J. W. Menezes ◽  
L. Cescato ◽  
V. F. Rodriguez-Esquerre ◽  
H. Hernandez-Figueroa ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Interference Lithography ◽  
Elliptical Holes
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