Modeling an Electrically Driven Graphene-Nanoribbon Laser for Optical Interconnects

TL;DR

This paper models an electrically driven graphene nanoribbon laser, demonstrating ultralow threshold power and potential for optical interconnects, advancing nanolaser technology with realistic parameters.

Contribution

It introduces a quantum master model for graphene nanoribbon VCSELs, analyzing their lasing properties and showing their advantages over traditional semiconductor microlasers.

Findings

Ultralow lasing threshold power achieved

Single-AGNR VCSEL can serve as a nanolaser

Potential for wide wavelength spectral range

Abstract

Graphene has two very important optical properties of population inversion of electrons, and broadband optical gain. As a result, graphene has potential for use in lasers and amplifiers. In this work, we presented a quantum master model and analyzed the properties for the electrically pumped single-AGNR vertical-cavity surface-emitting lasers (VCSELs) to investigate the lasing action and laser properties for realistic experimental parameters. A semiclassical approximation for the output power and laser linewidth is also derived. The laser threshold power was several orders of magnitude lower than that currently achievable with semiconductor microlasers. Our results have demonstrated that a single-AGNR VCSEL can serve as a nanolaser with ultralow lasing threshold. Implementation of such a GNR-based VCSEL is especially promising for optical interconnection systems since VCSELs emit low optical power and single longitudinal mode over a wide wavelength spectral range through tailoring GNRs.