Terahertz pulse generation from quantum cascade lasers

F. Wang, K. Maussang, S. Moumdji, R. Colombelli, J. R. Freeman, I. Kundu, L. Li, E. H. Linfield, A. G. Davies, J. Mangeney, J. Tignon, S. S. Dhillon

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

Abstract

We demonstrate the generation of 11ps terahertz pulses from metal-metal (MM) quantum cascade lasers (QCLs) at 77K via active mode-locking. Contrary to popular belief that a long gain recovery time is required, we demonstrate that the dominant factor necessary for active pulse generation is in fact the synchronization between the propagating electronic microwave modulation and the generated THz pulses in the QCL. This allows the THz pulse to propagate in phase with the microwave modulation along the gain medium, permitting pulse generation.

Original languageEnglish (US)
Title of host publicationIRMMW-THz 2015 - 40th International Conference on Infrared, Millimeter, and Terahertz Waves
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982721
DOIs
StatePublished - Nov 11 2015
Externally publishedYes
Event40th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2015 - Hong Kong, China
Duration: Aug 23 2015Aug 28 2015

Publication series

NameIRMMW-THz 2015 - 40th International Conference on Infrared, Millimeter, and Terahertz Waves

Other

Other40th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2015
Country/TerritoryChina
CityHong Kong
Period8/23/158/28/15

ASJC Scopus subject areas

  • Radiation
  • Computer Networks and Communications

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