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SUMMARY:Terahertz Heterodyne Spectrometer using a Quantum Cascade Laser - 
 Dr Yuan Ren\, Semiconductor Physics Group\, University of Cambridge
DTSTART:20131014T131500Z
DTEND:20131014T141500Z
UID:TALK48247@talks.cam.ac.uk
CONTACT:Teri Bartlett
DESCRIPTION:High-resolution spectroscopy at terahertz frequencies is of cr
 ucial importance in astronomical observation and atmospheric remote sensin
 g. It provides unique and important information on the history of our univ
 erse and its evolution\, by getting into the insight of the physical and c
 hemical conditions. Moreover\, it can help to address questions about our 
 own atmosphere such as ozone layer depletion and climate change problems. 
 However\, up to now this frequency region has rarely been accessible for h
 igh-resolution spectroscopy due to the lack of suitable local oscillator t
 echnology. The recently developed terahertz quantum cascade lasers become 
 the most promising candidate as a novel solid-state terahertz source. 
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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