Diffraction efficiency and guided light control by two-dimensional photonic-bandgap lattices

We report on the measurement of the diffraction efficiency of two-dimensional photonic-bandgap lattices consisting of a triangular array of circular air holes etched in a semiconductor waveguide. We use the spontaneous emission of the material as an internal point source. Combined with previous refl...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1999-07, Vol.35 (7), p.1045-1052
Main Authors: Labilloy, D., Benisty, H., Weisbuch, C., Krauss, T.F., Cassagne, D., Jouanin, C., Houdre, R., Oesterle, U., Bardinal, V.
Format: Article
Language:English
Subjects:
Arrays
Dielectric loss measurement
Dielectric materials
Diffraction
Diffraction efficiency
Etching
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lattices
Lighting control
Optical losses
Optical materials
Optics
Photonic bandgap materials
Physics
Reflectivity
Semiconductor materials
Semiconductor waveguides
Semiconductors
Spontaneous emission
Two dimensional
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Summary:We report on the measurement of the diffraction efficiency of two-dimensional photonic-bandgap lattices consisting of a triangular array of circular air holes etched in a semiconductor waveguide. We use the spontaneous emission of the material as an internal point source. Combined with previous reflectivity and transmission measurements, the diffraction data allow us to assess the total amount of out-of-plane losses experienced by a guided wave traversing the dielectric lattice, as a function of the lattice pitch. We found that these losses are particularly weak for some range of parameters, especially in the photonic bandgap of interest. We discuss the reasons why they can be substantial with other parameters.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.772174