Nanoscale lasing with high-gain materials

This talk will describe new classes of optical modes that can provide feedback for plasmonic lasing. First, we will discuss how quasi-propagating modes supported by plasmonic nanoparticle lattices can be used to facilitate lasing over a continuous range of discrete angles and wavelengths if the modal gain of the material is high enough. Next, we will discuss the unique lasing beam profiles and polarization states that can emerge from solid-state gain materials combined with Bravais-lattice and moiré-lattice nanocavities. Finally, we will describe prospects for ultra-low threshold lasing at room temperature based on polaritons.