All-analytical semiclassical theory of spaser for plasmonic nanocavity

Abstract

Experimental approaches to manipulate light-matter interaction at nanoscale have quickly advanced in recent years, leading to the demonstration of spaser (surface plasmon amplification by stimulated emission of radiation) in plasmonic nanocavities. Yet, a well-understood analytical theory to better understand and quantitatively explain the connotation of spaser system is urgently needed. Here we develop an all-analytical semiclassical theory to investigate the energy exchange between active materials and fields and the spaser performance in a plasmonic nanocavity. The theory can be commonly used in understanding and designing all novel microlaser, nanolaser, and spaser systems.

29 pages, 6 figures

References in corpus (5)

• Ultra-low threshold, electrically pumped quantum dot photonic crystal nanocavity laser
• Overcoming losses with gain in a negative refractive index metamaterial
• Self-consistent multi-mode lasing theory for complex or random lasing media
• Self-consistent calculations of loss compensated fishnet metamaterials
• Theory of pump-probe experiments of metallic metamaterials coupled to the gain medium

Cited by in corpus (5)

• Numerically exact solution of the many emitter -- cavity laser problem: application to the fully quantized spaser emission
• Spaser quenching by off-resonant plasmon modes
• Lasing Conditions of Transverse Electromagnetic Modes in Metallic-Coated Micro- and Nanotubes
• Gain-compensated metal cavity modes and a million-fold improvement of Purcell factors
• Doped Silicon Quantum Dots as Sources of Coherent Surface Plasmons