Plasmonic Nanolasers Without Cavity, Threshold and Diffraction Limit using Stopped Light

TL;DR

This paper introduces a cavity-free nanolaser that leverages stopped light at zero-group-velocity points in a plasmonic waveguide, enabling thresholdless lasing beyond the diffraction limit through a novel mode-locking mechanism.

Contribution

It demonstrates a new type of nanolaser that operates without a cavity by using stopped light in a plasmonic waveguide with gain, surpassing diffraction limits.

Findings

Achieved cavity-free, thresholdless lasing using stopped light.

Demonstrated lasing beyond the diffraction limit.

Introduced a novel mode-locking mechanism based on stopped light.

Abstract

We present a plasmonic waveguide where light pulses are stopped at well-accessed complex-frequency zero-group-velocity points. Introducing gain at such points results in cavity-free, "thresholdless" nanolasers beating the diffraction limit via a novel, stopped-light mode-locking mechanism.