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

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)161-169
Number of pages9
JournalOptical and Quantum Electronics
Volume34
Issue number1-3
DOIs
StatePublished - Jan 1 2002

Fingerprint

slabs
Waveguides
electromagnetism
waveguides
reflectance
life (durability)
Defects
defects
crystal lattices
Crystal lattices
textures
Textures
Diffraction
membranes
broadband
Membranes
Monitoring
diffraction
gallium arsenide

Keywords

  • Dispersion
  • Lifetimes
  • Photonic crystals
  • Slab waveguides

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Dispersion and lifetimes of electromagnetic modes attached to strongly textured slab waveguides. / Pacradouni, V.; Mandeville, W. J.; Cowan, A. R.; Young, J. F.; Johnson, Shane.

In: Optical and Quantum Electronics, Vol. 34, No. 1-3, 01.01.2002, p. 161-169.

Research output: Contribution to journalArticle

Pacradouni, V. ; Mandeville, W. J. ; Cowan, A. R. ; Young, J. F. ; Johnson, Shane. / Dispersion and lifetimes of electromagnetic modes attached to strongly textured slab waveguides. In: Optical and Quantum Electronics. 2002 ; Vol. 34, No. 1-3. pp. 161-169.
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