Effect of grating profile in a surface plasmon-polariton enhanced-efficiency schottky photodetector

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We use in this work a numerical method based on rigorous coupled wave analysis to calculate the diffraction efficiency in the case of a grating structure which can be a part of a Schottky based photodetector. The effects of the grating thickness, depth, period and filling factor on the diffraction efficiency are investigated. The thickness in particular is found to play a crucial role in determining the overall (sum of diffraction orders) diffraction efficiency since it is the parameter of importance when it comes to consider the degree of coupling between the surface plasmon-polaritons excited at both the air/metal and metal/semiconductor interfaces. Also the optimization of the grating parameters for a minimum reflectance is done at the particular wavelength λ = 1.5μm) considering three orders of diffraction. The effect of the grating profile on the diffraction efficiency is interpreted in terms of additional higher order Fourier harmonics added to a fundamental sinusoidal profile.

Original languageEnglish
Title of host publication2008 3rd International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA
DOIs
Publication statusPublished - 2008
Event2008 3rd International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA - Damascus, Syrian Arab Republic
Duration: Apr 7 2008Apr 11 2008

Other

Other2008 3rd International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA
CountrySyrian Arab Republic
CityDamascus
Period4/7/084/11/08

Keywords

  • Grating structure
  • Schottky photodetectors
  • Surface plasmon-polariton

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Communication

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  • Cite this

    Sellai, A. (2008). Effect of grating profile in a surface plasmon-polariton enhanced-efficiency schottky photodetector. In 2008 3rd International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA [4530149] https://doi.org/10.1109/ICTTA.2008.4530149