Surface-Emitting Metal Nanocavity Lasers

Abstract

There has been considerable interest in metallic nanolasers recently and some forms of these devices constructed from semiconductor pillars can be considered as surface-emitting lasers. We compare two different realized versions of these nanopillar devices, one with a trapped cutoff mode in the pillar, another with a mode that propagates along the pillar. For the cutoff mode devices we introduce a method to improve the output beam characteristics and look at some of the challenges in improving such devices.

On-chip low-profile nano-horn metal-clad optical cavity with much improved performance

“…Recent studies have suggested that the use of metal-clad cavities can be advantageous for on-chip applications due to their ultra-small fingerprint and efficient coupling with integrated waveguides [1,2]. To accomplish high quality factors over 1000, both the metallic absorption and the leakage into the substrate must be effectively suppressed.…”