Surface Lattice Resonance Lasers with Epitaxial InP Gain Medium
Year: 2024
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Surface lattice resonance (SLR) lasers, where the gain is supplied by a thin-film active material and the feedback comes from multiple scattering by plasmonic nanoparticles, have shown both low threshold lasing and tunability of the angular and spectral emission at room temperature. However, typically used materials such as organic dyes and QD films suffer from photodegradation, which hampers practical applications. Here, we demonstrate photostable single-mode lasing of SLR modes sustained in an epitaxial solid-state InP slab waveguide. The nanoparticle array is weakly coupled to the optical modes, which decreases the scattering losses and hence the experimental lasing threshold is as low as 94.99 ± 0.82 μJ cm 2 pulse –1 . The nanoparticle periodicity defines the lasing wavelength and enables tunable emission wavelengths over a 70 nm spectral range. Combining plasmonic nanoparticles with an epitaxial solid-state gain medium paves the way for large-area on-chip integrated SLR lasers for applications, including optical communication, optical computing, sensing, and LiDAR.
Source: ACS Photonics
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Awards: G1108271887, G4048582220, G6184379505, G6556073075, G715292007, G7594288067, Sir Henry Royce Institute - Imperial Build and Equipment, G8354991631, G8623976734, Near-equilibrium thermalised quantum light, REACTIVE PLASMONICS: OPTICAL CONTROL OF ELECTRONIC PROCESSES AT INTERFACES FOR NANOSCALE PHYSICS, CHEMISTRY AND METROLOGY
OpenAlex ID: W4402355095