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.
https://hal-iogs.archives-ouvertes.fr/hal-00868951 Contributor : Fatima PereiraConnect in order to contact the contributor Submitted on : Wednesday, October 2, 2013 - 11:32:40 AM Last modification on : Tuesday, October 6, 2020 - 4:30:48 PM Long-term archiving on: : Friday, January 3, 2014 - 7:30:09 AM
Aurélien David, Henri Benisty, Claude Weisbuch. Spontaneous emission in GaN/InGaN photonic crystal nanopillars. Optics Express, Optical Society of America - OSA Publishing, 2007, 15 (26), pp.17991-18004. ⟨hal-00868951⟩