Terahertz quantum cascade laser bandwidth prediction

Gary Agnew, Andrew Grier, Thomas Taimre, Yah Leng Lim, Zoran Ikonic, Paul Dean, Suraj P. Khanna, Mohammad Lachab, Alexander Valavanis, Jonathan Cooper, Paul Harrison, Edmund H. Linfield, A. Giles Davies, Dragan Indjin, Aleksandar D. Rakic*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Recent research shows that terahertz quantum cascade lasers are well-suited to high speed free space communication. The results of both theoretical and laboratory work indicate the devices are able to deliver bandwidths in the gigahertz to tens of gigahertz range without the burden of relaxation oscillations found in diode lasers. Using a novel rate equation model we explore the frequency response characteristics of a real device and report on the finding of a strongly peaked bias current-dependent response.

Original languageEnglish
Title of host publication2015 International Topical Meeting on Microwave Photonics (MWP)
PublisherInstitute of Electrical and Electronics Engineers
Number of pages3
Publication statusPublished - 2015
Externally publishedYes
EventInternational Topical Meeting on Microwave Photonics (MWP) - Paphos, Cyprus
Duration: 26 Oct 201529 Oct 2015


ConferenceInternational Topical Meeting on Microwave Photonics (MWP)


  • Free space communication
  • terahertz quantum cascade laser
  • bandwidth
  • Modulation


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