Abstract : We investigate the physics of spontaneous emission in a photonic crystal (PhC) made of GaN rods with embedded InGaN quantum wells, formed on a thick GaN layer. Although the PhC lies on a higherindex medium, we evidence the existence of unexpected quasi-guided Bloch modes which are strongly localized in the PhC region and possess a long lifetime. These modes determine the behavior of spontaneous emission such as the emission diagram and Purcell effect, as would happen in the usual case of emission in a PhC membrane.
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Contributor : Fatima Pereira
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Submitted on : Wednesday, October 2, 2013 - 11:32:40 AM
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Aurélien David, Henri Benisty, Claude Weisbuch. Spontaneous emission in GaN/InGaN photonic crystal nanopillars. Optics Express, Optical Society of America, 2007, 15 (26), pp.17991-18004. ⟨hal-00868951⟩
