Surface-plasmon mode hybridization in subwavelength microdisk lasers

Perahia, R.; Alegre, T. P. Mayer; Safavi-Naeini, A. H.; Painter, O.
November 2009
Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p201114
Academic Journal
Hybridization of surface-plasmon and dielectric waveguide whispering-gallery modes are demonstrated in a semiconductor microdisk laser cavity of subwavelength proportions. A metal layer is deposited on top of the semiconductor microdisk, the radius of which is systematically varied to enable mode hybridization between surface-plasmon and dielectric modes. The anticrossing behavior of the two cavity mode types is experimentally observed via photoluminescence spectroscopy and optically pumped lasing action at a wavelength of λ∼1.3 μm is achieved at room temperature.


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