Room temperature continuous wave THz quantum cascade laser source with high power operation

M. Razeghi, Q. Y. Lu, N. Bandyopadhyay, S. Slivken, Y. Bai

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

2 Scopus citations

Abstract

We demonstrate the first room temperature continuous wave THz sources based on intracavity difference frequency generation from mid-infrared quantum cascade lasers. This accomplishment was enabled by integration of several key technologies, resulting in a new high efficiency waveguide design and improved thermal dissipation. Room temperature single mode emissions at 3.6 THz with an emitting power of 3 μW and a mid-IR-to-THz conversion efficiency of 0.44 mW/W2 are obtained in continuous wave mode. THz peak power up to 1.4 mW in pulsed mode operation with a mid-IR-to-THz conversion efficiency of 0.8 mW/W2 at 3.5 THz is also demonstrated.

Original languageEnglish (US)
Title of host publicationTerahertz Emitters, Receivers, and Applications V
EditorsAlexei N. Baranov, John M. Zavada, Dimitris Pavlidis, Manijeh Razeghi
PublisherSPIE
ISBN (Electronic)9781628412260
DOIs
StatePublished - 2014
EventTerahertz Emitters, Receivers, and Applications V - San Diego, United States
Duration: Aug 17 2014Aug 18 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9199
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherTerahertz Emitters, Receivers, and Applications V
CountryUnited States
CitySan Diego
Period8/17/148/18/14

Keywords

  • Difference frequency generation
  • Distributed feedback
  • Quantum cascade lasers
  • Terahertz

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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