Dispersion Control in Two-Dimensional Superlattice Photonic Crystal Slab Waveguides by Atomic Layer Deposition

D. P. Gaillot; Elton Graugnard; J. Blair; C. J. Summers

doi:10.1063/1.2793188

Dispersion Control in Two-Dimensional Superlattice Photonic Crystal Slab Waveguides by Atomic Layer Deposition

D. P. Gaillot, Elton Graugnard, J. Blair, C. J. Summers

Micron School of Materials Science and Engineering

Georgia Institute of Technology

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The frequency and dispersion of photonic bands in two-dimensional triangular-based superlattice photonic crystal Si slab waveguides were manipulated using atomic layer deposition. The samples were conformally coated with increasing thicknesses of TiO2 and characterized by polarized angular-dependent reflectance measurements, which revealed shifts in the photonic band frequencies of 16% as well as continuous changes in band dispersion. The ability to tune toward zero group velocity by tuning band repulsion between same-polarization bands is demonstrated. Finite-difference time-domain calculations, combined with a dielectric weighting model, were used to assess the observed band and dispersion tuning.

Original language	American English
Article number	181123
Journal	Applied Physics Letters
Volume	91
Issue number	18
DOIs	https://doi.org/10.1063/1.2793188
State	Published - 29 Oct 2007

Keywords

atomic layer deposition
band structure
disperse systems
elemental semiconductors

EGS Disciplines

Materials Science and Engineering

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10.1063/1.2793188

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title = "Dispersion Control in Two-Dimensional Superlattice Photonic Crystal Slab Waveguides by Atomic Layer Deposition",

abstract = " The frequency and dispersion of photonic bands in two-dimensional triangular-based superlattice photonic crystal Si slab waveguides were manipulated using atomic layer deposition. The samples were conformally coated with increasing thicknesses of TiO2 and characterized by polarized angular-dependent reflectance measurements, which revealed shifts in the photonic band frequencies of 16% as well as continuous changes in band dispersion. The ability to tune toward zero group velocity by tuning band repulsion between same-polarization bands is demonstrated. Finite-difference time-domain calculations, combined with a dielectric weighting model, were used to assess the observed band and dispersion tuning.",

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AU - Gaillot, D. P.

AU - Graugnard, Elton

AU - Blair, J.

AU - Summers, C. J.

PY - 2007/10/29

Y1 - 2007/10/29

N2 - The frequency and dispersion of photonic bands in two-dimensional triangular-based superlattice photonic crystal Si slab waveguides were manipulated using atomic layer deposition. The samples were conformally coated with increasing thicknesses of TiO2 and characterized by polarized angular-dependent reflectance measurements, which revealed shifts in the photonic band frequencies of 16% as well as continuous changes in band dispersion. The ability to tune toward zero group velocity by tuning band repulsion between same-polarization bands is demonstrated. Finite-difference time-domain calculations, combined with a dielectric weighting model, were used to assess the observed band and dispersion tuning.

AB - The frequency and dispersion of photonic bands in two-dimensional triangular-based superlattice photonic crystal Si slab waveguides were manipulated using atomic layer deposition. The samples were conformally coated with increasing thicknesses of TiO2 and characterized by polarized angular-dependent reflectance measurements, which revealed shifts in the photonic band frequencies of 16% as well as continuous changes in band dispersion. The ability to tune toward zero group velocity by tuning band repulsion between same-polarization bands is demonstrated. Finite-difference time-domain calculations, combined with a dielectric weighting model, were used to assess the observed band and dispersion tuning.

KW - atomic layer deposition

KW - band structure

KW - disperse systems

KW - elemental semiconductors

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UR - https://scholarworks.boisestate.edu/mse_facpubs/22

U2 - 10.1063/1.2793188

DO - 10.1063/1.2793188

M3 - Article

SN - 0003-6951

VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 181123

ER -

Dispersion Control in Two-Dimensional Superlattice Photonic Crystal Slab Waveguides by Atomic Layer Deposition

Abstract

Keywords

EGS Disciplines

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