Optical Pumping of Graphene-Based Heterostructures with Black-Arsenic-Phosphorus Absorbing-Cooling Layer for Terahertz Lasing

Maxim Ryzhii, Victor Ryzhii, Taiichi Otsuji, Vladimir Mitin, Michael S. Shur

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We evaluate the optical pumping efficiency of the graphene-layer (GL) heterostructures intended for the terahertz (THz) lasing using the interband transitions in the GL. The pumping of such by near- or mid-infrared (NIR or MIR) radiation leads to the creation of a substantially hot two-dimensional electron-hole plasma (2D-EHP) in the GL. This hampers the interband population inversion in the 2D-EHP and can suppress the THz lasing. To prevent the 2D-EHP overheating, we propose to use the NIR/MIR radiation pumping of the GL through a sufficiently thick layer absorbing this radiation. This layer with sufficiently small energy gap enables an increase in the quantum efficiency of the pumping accompanied by strong cooling of the electron-hole pairs injected into the GL. As shown, the absorbing-cooling layers made of black-arsenic-phosphorus can be fairly efficient if their energy gap is smaller than the optical phonon energy in the GL.

Original languageEnglish
Title of host publication2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538695494
DOIs
Publication statusPublished - 2019 Nov
Event2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019 - Tel-Aviv, Israel
Duration: 2019 Nov 42019 Nov 6

Publication series

Name2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019

Conference

Conference2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019
CountryIsrael
CityTel-Aviv
Period19/11/419/11/6

Keywords

  • Black arsenic-phosphorus
  • carrier cooling
  • graphene
  • injection
  • light-emitting diode
  • terahertz lasing

ASJC Scopus subject areas

  • Information Systems and Management
  • Electrical and Electronic Engineering
  • Instrumentation
  • Artificial Intelligence
  • Computer Networks and Communications

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