Abstract
We investigate the modification (enhancement and suppression) of the spontaneous emission rate of a dipole emitter in two configurations: inside a finite-length semiconductor nanowire surrounded by bulk metal and in the vicinity of a finite metal nanowire. Our analysis is based on a first-principle approach, which is reduced to a seminumeric one in the limit of large nanowire aspect ratios. The numerical calculations are carried out for an emitter in a GaAs nanowire embedded in Ag or Au and for that nearby an Ag or Au nanowire in vacuum or dielectric. We consider in detail the Purcell and factors as functions of the cylinder radius, the emitter position, and the transition frequency for both configurations. We contrast the results for finite-length nanowires with those obtained in the infinite-length approximation and find considerable differences in the Purcell factor magnitude.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Vladimir Bordo
J. Opt. Soc. Am. B 29(7) 1799-1809 (2012)
Morteza Aramesh, Jiri Cervenka, Ann Roberts, Amir Djalalian-Assl, Ranjith Rajasekharan, Jinghua Fang, Kostya Ostrikov, and Steven Prawer
Opt. Express 22(13) 15530-15541 (2014)
Ivan D. Rukhlenko, Dayan Handapangoda, Malin Premaratne, Anatoly V. Fedorov, Alexander V. Baranov, and Chennupati Jagadish
Opt. Express 17(20) 17570-17581 (2009)