Observation of leaky slab modes in an air-bridged semiconductor waveguide with a two-dimensional photonic lattice

M. Kanskar, P. Paddon, V. Pacradouni, R. Morin, A. Busch, Jeff F. Young, Shane Johnson, Jim MacKenzie, T. Tiedje

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Abstract

An air-bridged, 120-nm-thick semiconductor slab with a two-dimensional (2D) square array of through holes on a 480 nm pitch (Λ) was fabricated using selective wet etching techniques. The second order photonic resonances of the structure were studied by comparing broadband optical scattering data with numerical solutions of Maxwell's equations. Features observed in these spectra over a 1200 cm-1 range, near 9500 cm-1, indicate that the 2D texture splits the energy degeneracy of slab modes with propagation constants {±2π/Λ,0} and {0,±2π/Λ} by as much as 14%.

Original languageEnglish (US)
Pages (from-to)1438-1440
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number11
DOIs
StatePublished - Mar 17 1997
Externally publishedYes

Cite this

Kanskar, M., Paddon, P., Pacradouni, V., Morin, R., Busch, A., Young, J. F., Johnson, S., MacKenzie, J., & Tiedje, T. (1997). Observation of leaky slab modes in an air-bridged semiconductor waveguide with a two-dimensional photonic lattice. Applied Physics Letters, 70(11), 1438-1440. https://doi.org/10.1063/1.118570