A spaser or plasmonic laser is a type of laser which aims to confine light at a subwavelength scale far below Rayleigh's diffraction limit of light, by storing some of the light energy in electron oscillations called surface plasmon polaritons.

May 25, 2020 · Plasmonic nanolasers, or spasers, are the counterparts of lasers, but instead of emitting photons, spasers emit composite particles made of photons and plasmons on the surfaces of metal...

Aug 30, 2009 · This demonstration of deep subwavelength plasmonic laser action at visible frequencies suggests new sources that may produce coherent light far below the diffraction limit.

Aug 25, 2021 · Here, we demonstrate submicrometer-sized, plasmonic lasers using cesium-lead-bromide perovskite (CsPbBr 3) crystals, as small as 0.58 μm by 0.56 μm by 0.32 μm (cuboid) and 0.79 μm by 0.66 μm by 0.18 μm (plate), on polymer-coated gold substrates at room temperature.

Sep 16, 2024 · Two-dimensional (2D) semiconductors, owing to their strong excitonic emission, are emerging as efficient gain media for constructing the ultimate nanolaser. The further integration of 2D semiconductors with plasmonic devices holds promise for …

Here we summarize our studies on the fundamental properties and applications of plasmonic nanolasers in recent years, including dark emission characterization, scaling laws, quantum efficiency, quantum threshold, gain and loss optimization, low loss plasmonic materials, sensing, and eigenmode engineering.

Jan 1, 2012 · Surface plasmon lasers have the potential to generate intense optical fields and accelerate light-matter interactions for extremely sensitive nanoscale spectroscopies. This review outlines the science of surface plasmon confinement and the techniques necessary to integrate semiconductors with metal nanostructures for surface plasmon amplification.

In this review, we summarize the advances of semiconductor NW plasmonic lasers since their first demonstration in 2009. First of all, we briefly look into the fabrication and physical/chemical properties of semiconductor NWs.

Oct 29, 2020 · The plasmonic nanolaser is a class of lasers with the physical dimensions free from the optical diffraction limit. In the past decade, progress in performance, applications, and mechanisms of plasmonic nanolasers has increased dramatically.

Jan 24, 2025 · The coupling of random laser modes to plasmonic nanocavities with high absorption losses results in unusual lasing behavior. At higher pump fluences, the nonlinear optical behavior of the Au nanoislands induces a second kink in the threshold characteristics.