Images and spectra of inhibited light propagation in a 2-dimensional photonic lattice at 1.5 {micro}m

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Using infrared light scattering microscopy, the authors have directly observed the inhibition of photon propagation in a 2-dimensional photonic lattice fabricated as a hexagonal array of AlGaAs posts. The lattice was formed by reactive ion etching of {approximately}400 nm diameter posts defined by electron beam lithography. The lattice design parameters correspond to a photonic bandgap near 1.5 {micro}m as calculated by Meade et al. This hexagonal array of posts is an improvement over early honeycomb lattices because it is easier to fabricate. The photonic lattice of 1.4 {micro}m high posts was incorporated into waveguide designed for single mode at 1.5 … continued below

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8 p.

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Gourley, P. L.; Wendt, J. R.; Vawter, G. A.; McDonald, A. E. & Bieber, A. E. June 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 51 times. More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Using infrared light scattering microscopy, the authors have directly observed the inhibition of photon propagation in a 2-dimensional photonic lattice fabricated as a hexagonal array of AlGaAs posts. The lattice was formed by reactive ion etching of {approximately}400 nm diameter posts defined by electron beam lithography. The lattice design parameters correspond to a photonic bandgap near 1.5 {micro}m as calculated by Meade et al. This hexagonal array of posts is an improvement over early honeycomb lattices because it is easier to fabricate. The photonic lattice of 1.4 {micro}m high posts was incorporated into waveguide designed for single mode at 1.5 {micro}m. Several waveguide/lattice combinations were fabricated, including M-bar and K-bar lattice orientations aligned parallel to the waveguide and different numbers of lattice periods. The waveguide/lattice structures were fabricated on GaAs substrates that were subsequently thinned and cleaved to couple light into the waveguide facets. Using a specially designed triple infrared microscope system, they simultaneously imaged the input and output facets and the top surface of the waveguide as laser light was focused onto the input facet. Because of internal scattering in the waveguide, light is scattered upward outward and can be imaged with an infrared camera. Images for reflected input, waveguide scattered light, and transmitted output light for the waveguide with (left images) and without the photonic lattice (right images) are shown. The lefthand image shows how the lattice interrupts the transport of light through the waveguide.

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8 p.

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OSTI as DE96010532

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  • CLEO/QUELS `96: 16. annual conference on lasers and electro-optics and 6th quantum electronics and laser science conference: shedding new light on universal applications, Anaheim, CA (United States), 2-7 Jun 1996

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  • Other: DE96010532
  • Report No.: SAND--96-1283C
  • Report No.: CONF-960642--13
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 244649
  • Archival Resource Key: ark:/67531/metadc669210

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  • June 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • July 5, 2020, 12:15 p.m.

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Gourley, P. L.; Wendt, J. R.; Vawter, G. A.; McDonald, A. E. & Bieber, A. E. Images and spectra of inhibited light propagation in a 2-dimensional photonic lattice at 1.5 {micro}m, article, June 1, 1996; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc669210/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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