Bose-Einstein condensation of THz photons in an optical microcavity with Landau-quantized electrons

TL;DR

This paper proposes a theoretical model for a terahertz photon Bose-Einstein condensate in an optical microcavity with Landau-quantized electrons, offering a new coherent radiation source without traditional lasing mechanisms.

Contribution

It introduces a novel theoretical framework for a THz photon BEC in a microcavity with Landau-quantized electrons, bypassing standard lasing requirements.

Findings

Photon condensation kinetics are characterized.

The model demonstrates a coherent THz source without population inversion.

The setup leverages inelastic photon scattering on a 2D electron gas.

Abstract

We present a theoretical model for a coherent terahertz radiation source based on Bose-Einstein condensate of incoherently pumped microcavity photons. Energy relaxation is provided by inelastic photon scattering on a two-dimensional electron gas in magnetic field. The proposed setup evades the standard lasing mechanisms: neither population inversion nor light wave amplification is utilized. We study the kinetics of photon condensation and describe a semiconductor-crystal based device.