Semi-Classical Analysis and Design of Quantum dot Based Electrically Pumped plasmonic nanolaser

TL;DR

This paper presents a semi-classical analysis of a GaAs/AlGaAs quantum dot based plasmonic nanolaser, demonstrating its potential for integrated, room-temperature, electrically pumped plasmonic sources with high performance.

Contribution

It introduces a novel quantum dot based nanolaser design with detailed theoretical analysis, highlighting its compact size, high output power, and wide modulation frequency.

Findings

Outputs 1 μW power at 3.5 mA injection current

Operates at room temperature with a 10 THz modulation bandwidth

Has a large Purcell factor of about 3460

Abstract

Recently there is an increasing attention to electrically pumped room temperature sub-wavelength plasmon sources because of their various potential applications mainly in the integrated plasmonic field. In this paper, a GaAs/AlGaAs quantum dot based waveguide integrated plasmonic nanolaser is introduced and theoretically investigated. Using a semi-classical rate equation model, performance of our nanolaser is studied and its characteristics are presented in details. The proposed nanolaser has a tiny footprint of 0.25 um2, room temperature operating condition and CMOS friendly process while having remarkable output performance. The new structure generates 1uW output power with 3.5mA injection current ( the threshold pump current is calculated to be about 2.5uA ) in 850 nm and has wide modulation frequency of 10 THz in threshold pumping rate, large Purcell factor about 3460 and high output coupling ratio to the host plasmonic waveguide.