Dispersion and lifetimes of electromagnetic modes attached to strongly textured slab waveguides

V. Pacradouni; W. J. Mandeville; A. R. Cowan; J. F. Young; Shane Johnson

doi:10.1023/A:1013325431064

Dispersion and lifetimes of electromagnetic modes attached to strongly textured slab waveguides

V. Pacradouni, W. J. Mandeville, A. R. Cowan, J. F. Young, Shane Johnson

Engineering, Ira A. Fulton Schools of (IAFSE)

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

5 Scopus citations

Abstract

The influence of strong, two-dimensional (2D) periodic texture on the dispersion and lifetimes of resonant electromagnetic modes localized in the vicinity of thin (80 to 155 nm) GaAs membranes supported on thick (1 to 2 μm) wet-oxidized AlAs cladding layers is reported. A method of extracting this information by fitting Fano-like features in broadband specular reflectivity spectra is described in detail, and applied to samples containing both triangular and square 2D lattices. A new and easier method of probing the properties of these modes is also demonstrated. It involves incorporating a superlattice of 'defects' in the principal crystal lattice, and monitoring the defect diffraction spectrum, rather than the specular reflectivity.

Original language	English (US)
Pages (from-to)	161-169
Number of pages	9
Journal	Optical and Quantum Electronics
Volume	34
Issue number	1-3
DOIs	https://doi.org/10.1023/A:1013325431064
State	Published - Jan 2002

Keywords

Dispersion
Lifetimes
Photonic crystals
Slab waveguides

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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title = "Dispersion and lifetimes of electromagnetic modes attached to strongly textured slab waveguides",

abstract = "The influence of strong, two-dimensional (2D) periodic texture on the dispersion and lifetimes of resonant electromagnetic modes localized in the vicinity of thin (80 to 155 nm) GaAs membranes supported on thick (1 to 2 μm) wet-oxidized AlAs cladding layers is reported. A method of extracting this information by fitting Fano-like features in broadband specular reflectivity spectra is described in detail, and applied to samples containing both triangular and square 2D lattices. A new and easier method of probing the properties of these modes is also demonstrated. It involves incorporating a superlattice of 'defects' in the principal crystal lattice, and monitoring the defect diffraction spectrum, rather than the specular reflectivity.",

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AU - Pacradouni, V.

AU - Mandeville, W. J.

AU - Cowan, A. R.

AU - Young, J. F.

AU - Johnson, Shane

PY - 2002/1

Y1 - 2002/1

N2 - The influence of strong, two-dimensional (2D) periodic texture on the dispersion and lifetimes of resonant electromagnetic modes localized in the vicinity of thin (80 to 155 nm) GaAs membranes supported on thick (1 to 2 μm) wet-oxidized AlAs cladding layers is reported. A method of extracting this information by fitting Fano-like features in broadband specular reflectivity spectra is described in detail, and applied to samples containing both triangular and square 2D lattices. A new and easier method of probing the properties of these modes is also demonstrated. It involves incorporating a superlattice of 'defects' in the principal crystal lattice, and monitoring the defect diffraction spectrum, rather than the specular reflectivity.

AB - The influence of strong, two-dimensional (2D) periodic texture on the dispersion and lifetimes of resonant electromagnetic modes localized in the vicinity of thin (80 to 155 nm) GaAs membranes supported on thick (1 to 2 μm) wet-oxidized AlAs cladding layers is reported. A method of extracting this information by fitting Fano-like features in broadband specular reflectivity spectra is described in detail, and applied to samples containing both triangular and square 2D lattices. A new and easier method of probing the properties of these modes is also demonstrated. It involves incorporating a superlattice of 'defects' in the principal crystal lattice, and monitoring the defect diffraction spectrum, rather than the specular reflectivity.

KW - Dispersion

KW - Lifetimes

KW - Photonic crystals

KW - Slab waveguides

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Dispersion and lifetimes of electromagnetic modes attached to strongly textured slab waveguides

Abstract

Keywords

ASJC Scopus subject areas

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