On RT CW THz Cyclotron Resonance lasing in graphene in crossed E, H fields

TL;DR

This paper explores the potential for cyclotron resonance lasing in graphene sandwiched with hexagonal boron nitride under crossed electric and magnetic fields, demonstrating room-temperature operation above 1 THz at magnetic fields over 1 Tesla.

Contribution

It introduces a classical model showing the feasibility of room-temperature THz cyclotron lasing in graphene sandwiches with known scattering data.

Findings

Lasing can be achieved at frequencies above 1 THz.

Operation is feasible at room temperature.

Requires magnetic fields above 1 Tesla.

Abstract

In framework of classical consideration of electron trajectories in crossed electric and magnetic fields and conductivity of electron system on cyclotron resonance in single layer graphene possibility to achieve cyclotron lasing in hexagonal boron nitride single layer graphene sandwiches is discussed. By simplified consideration with known data on scattering rate in the sandwiches it is demonstrated that the continuing wave laser action can be achieved in high quality sandwiches at room temperature at frequencies above one tera hertz in magnetic field above one Tesla.