Limitations of Particle-Based Spasers

Abstract

We present a semi-classical analytic model for spherical core-shell surface plasmon lasers. Within this model, we drop the widely used one-mode approximations in favor of fully electromagnetic Mie theory. This allows for incorporation of realistic gain relaxation rates that so far have been massively underestimated. Especially, higher order modes can undermine and even reverse the beneficial effects of the strong Purcell effect in such systems. Our model gives a clear view on gain- and resonator-requirements, as well as on the output characteristics that will help experimenters to design more efficient particle-based spasers.

6 pages, 3 figures

References in corpus (3)

• Quantum Plasmonics
• Modes and Mode Volumes of Leaky Optical Cavities and Plasmonic Nanoresonators
• Spontaneous radiation of a two-level atom into multipole modes of a plasmonic nanoparticle

Cited by in corpus (12)

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• Heuristic Modeling of Strong Coupling in Plasmonic Resonators
• A Single-Emitter Gain Medium for Bright Coherent Radiation from a Plasmonic Nanoresonator
• Lasing and Amplification from Two-Dimensional Atom Arrays
• A Comparative Study of Coherent and Incoherent Drives in Four-Level Quantum Dot-Based Spaser
• Coherent amplification and lasing of weak surface-plasmon polaritons in a negative-index metamaterial with a resonant atomic medium
• Gain-compensated metal cavity modes and a million-fold improvement of Purcell factors
• A fully nanoscopic dielectric laser
• Emission dynamics and spectrum of a nanoshell-based plasmonic nanolaser spaser