2000 character limit reached
All-dielectric nanolaser (1408.5164v2)
Published 21 Aug 2014 in cond-mat.mes-hall and physics.optics
Abstract: We demonstrate theoretically that a subwavelength spherical dielectric nanoparticle coated with a gain shell forms a nanolaser. Lasing modes of such a nanolaser are associated with the Mie resonances of the nanoparticle. We establish a general condition for the lasing threshold and show that the use of high refractive index dielectric media allows for lasing with a threshold significantly lower than that for nanolasers incorporating lossy plasmonic metals.