Photonic quantum ring laser
arXiv:physics/9811054 · doi:10.1103/PhysRevLett.82.536
Abstract
We report a quantum ring-like toroidal cavity naturally formed in a vertical-cavity-like active microdisk plane due to Rayleigh's band of whispering gallery modes. The $\sqrt{T}$-dependent redshift and a square-law property of microampere-range threshold currents down to 2 $μ$A are consistent with a photonic quantum wire view, due to whispering gallery mode-induced dimensional reduction.
4 pages, 5 figures, REVTEX, Submitted to Phys. Rev. Lett. 06/08/98, revised 10/28/98, To appear in Phys. Rev. Lett., Vol. 82(3), Jan. 1999