2005/12/06 by A. Femius Koenderink, A. F. Koenderink, Maria Kafesaki +5 · 72 citations
Chemistry · Engineering · Physics and Astronomy · #Chemistry #Condensed matter physics #Dipole #Electric field #Light emission #Materials science #Membrane #Molecular physics #Optics #Optoelectronics #Photonic Crystals and Applications #Photonic and Optical Devices #Photonic crystal #Physics #Plasmonic and Surface Plasmon Research #Purcell effect #Quantum mechanics #Slab #Spontaneous emission #cond-mat.other
paper · pdf · doi:10.1364/josab.23.001196
published in Journal of the Optical Society of America B 23(6), 1196 (Optica Publishing Group)
arxiv created 2005/12/06 · openalex publication_date 2006/06/01 · arxiv updated 2012/08/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show theoretically that two-dimensional (2D) photonic crystals in semiconductor membranes strongly modify the radiative decay of dipole emitters. Three-dimensional finite-difference time-domain calculations show over 7 times inhibition and 15 times enhancement of the emission rate compared with vacuum for judiciously oriented and positioned dipoles. Emission rate modifications inside the membrane mimic the local mode density in a simple 2D model. The inhibition of emission saturates with crystal size around the source, with a 1/e size that scales as the inverse gap bandwidth. Owing to the vertically guided mode structure, inhibition occurs only near the slab center, but enhanced emission persists also outside the membrane. We find that emission changes can even be observed in experiments with ensembles of randomly oriented dipoles.