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SUMMARY:Design and Applications of Terahertz Quantum Cascade Lasers in Ima
 ging and Sensing - Dr Alexander Valavanis\, School of Electronic &amp\; El
 ectrical Engineering\, University of Leeds.
DTSTART:20150512T113000Z
DTEND:20150512T120000Z
UID:TALK59463@talks.cam.ac.uk
CONTACT:Leona Hope-Coles
DESCRIPTION:Terahertz-frequency quantum cascade lasers (THz QCLs) are powe
 rful yet compact sources of radiation in the 1-5 THz band of the electroma
 gnetic spectrum\, with numerous potential applications in trace gas sensin
 g\, astronomy\, imaging and materials analysis.  The operating principles 
 of THz QCLs will be discussed\, and an overview of recently-developed self
 -mixing interferometry sensing techniques will be presented.  Future direc
 tions for THz QCL research will be discussed\, including the integration o
 f QCLs with other THz system components\, and the prospects for developing
  QCLs using alternative high-temperature and high-frequency materials.
LOCATION:Ryle Seminar Room no. 930\, Rutherford Building\, Cavendish Labor
 atory
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