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SUMMARY:Terahertz Quantum Cascade lasers based on Micro-resonators (SP Wor
 kshop) - Miss Yuqing Wu\, University of Cambridge\, Semiconductor Physics 
 Group
DTSTART:20150722T131500Z
DTEND:20150722T141500Z
UID:TALK59558@talks.cam.ac.uk
CONTACT:Teri Bartlett
DESCRIPTION:Micro-resonators were first demonstrated operating in the THz 
 region in 2005 and have drawn lots of attention due to ensure probability 
 to realize the dream of producing ultrasmall devices with extremely low cu
 rrent as well as low electric power. In micro-resonators\, the emission is
  isotropic and mainly in the disk plane. The practice of integrating a ter
 ahertz disk laser or ring laser with a vertically emitting grating by fabr
 icating a distributed feedback structure along the circumference of the di
 sk to couple out the Whispering gallery mode in the vertical direction gre
 atly increases the emitted power\, and at the same time\, significantly en
 hances the directionality and minimizes the volume of the output beam\, wh
 ich is a crucial aspect for future implementations and development of sens
 ing elements.\n
LOCATION:Mott Seminar Room (Mott Building Room 531)\, Cavendish Laboratory
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