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SUMMARY:(SP Wednesday Workshop) - Fibre Coupled Terahertz Quantum Cascade 
 Lasers - Mr Robert Wallis\, University of Cambridge
DTSTART:20141112T141500Z
DTEND:20141112T151500Z
UID:TALK52475@talks.cam.ac.uk
CONTACT:Teri Bartlett
DESCRIPTION:The terahertz (THz) frequency range provides a rich area of ph
 ysics to be explored\, and has proved useful in many real-world applicatio
 ns\, such as security imaging and gas sensing. The terahertz quantum casca
 de laser (QCL) is a unipolar heterogeneous semiconductor laser that has th
 e potential to be the THz source of choice for many of these applications\
 , being both powerful and frequency selective. However\, these devices suf
 fer from highly divergent beam patterns\, proving detrimental to power del
 ivery over longer distances. In this talk I shall give an overview of the 
 THz QCL\, and discuss progress towards a fibre coupled QCL system. I shall
  also outline potential applications of such a system\, and areas for impr
 ovement in the existing methodology.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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