Frequency Stop Band in an Air-Voided ZnO Photonic Crystal: A Dispersion Diagram Based Design

• Authors: V. Chaturvedi , M. Kumar Roy
• Languages of publication: EN

Abstracts

EN

Electromagnetic excitation, inside small volumes, results in perturbations which play an important role in the validation of theoretical formulations. Efforts to catch a glimpse of the action inside of the small space, can aid better thin film designs. In the non-linear anisotropic regime the results of such interactions provide important insights into the bulk level behavior of matter. Using this approach, a zinc oxide (ZnO) based photonic crystal is designed with spherical air voids. A Gaussian continuous wave excitation of the refractive index contrast (ZnO=1.9 and Air =1) photon waveguide generated thus, is characterized for the redistribution of electromagnetic field. When, centered at a specific wavelength (1.9 μ m), the graph of the frequencies that can exist inside the crystal, is plotted against the limited k-space vector. The dispersion diagram that emerges shows a band of frequency states that cannot exist inside such a design. Physically this constitutes a k-space which is devoid of any detectable disturbances. Crystallographically, the reduced Brilluoin zone can be used to make a thin layer of ZnO that can act as a frequency stop layer, in a real multilayered photoelectric device.

Keywords

EN

01.65.+g; 01.70.+w; 41.20.Jb; 78.20.-e

Discipline

• 41.20.Jb: Electromagnetic wave propagation; radiowave propagation(for light propagation, see 42.25.Bs; for electromagnetic waves in plasma, see 52.35.Hr; for atmospheric, ionospheric, and magnetospheric propagation, see 92.60.Ta, 94.20.Bb, and 94.30.Tz, respectively; see also 94.05.Pt Wave/wave, wave/particle interactions, in space plasma physics)
• 01.70.+w: Philosophy of science
• 01.65.+g: History of science
• 78.20.-e: Optical properties of bulk materials and thin films(for optical properties related to materials treatment, see 81.40.Tv; for optical materials, see 42.70-a; for optical properties of superconductors, see 74.25.Gz; for optical properties of rocks and minerals, see 91.60.Mk; for optical properties of specific thin films, see 78.66.-w)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 3
• Pages: 683-687

Dates

published

2016-09

received

2015-11-20

Contributors

author

V. Chaturvedi

• Department of Electronics & Communication Engineering, Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, MP, 482001, India

author

M. Kumar Roy

• Department of Natural Sciences, Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, MP, 482001, India

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Identifiers

DOI

10.12693/APhysPolA.130.683