title: Steady state superradiance of a 2D-spaser array.
abstract: We show that due to near-field interaction of plasmonic particles via gain particles, a two-dimensional array of incoherently pumped spasers can be self-synchronized so that the dipole moments of all the plasmonic particles oscillate in phase and in parallel to the array plane. The synchronized state is established as a result of competition with the other possible modes having different wavenumbers and it is not destroyed by radiation of leaking waves, retardation effects, and small disorder. Such an array produces a narrow beam of coherent light due to continuous-wave superradiance. Thus, spasers, which mainly generate near-fields, become an efficient source of far-field radiation when the interaction between them is sufficiently strong.
authors.affiliation: Institute for Theoretical and Applied Electromagnetics RAS, 13 Izhorskaya, Moscow 125412, Russia.
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Dorofeenko
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Zyablovsky
authors.forename: Alexey P
authors.initials: AP
authors.lastname: Vinogradov
authors.forename: Eugeny S
authors.initials: ES
authors.lastname: Andrianov
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Pukhov
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Lisyansky
mesh_terms: D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D009991:Oscillometry / Q000379:methods*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*