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SUMMARY:Terahertz radiation from Bi2Sr2CaCu2O8 interlayer Josephson juncti
 ons:  Progress and future strategies. - Tim Benseman\, Argonne National La
 boratory\, U.S.A.
DTSTART:20130305T111500Z
DTEND:20130305T121500Z
UID:TALK43713@talks.cam.ac.uk
CONTACT:Helen Verrechia
DESCRIPTION:At present\, no bright compact sources of coherent radiation e
 xist in \nthe range from approximately 0.5 THz to 1.3 THz. This region is 
 of \nparticular interest for a range of scientific\, medical\, and \nsecur
 ity-related applications. Stacks of intrinsic Josephson junctions \nin ext
 remely anisotropic high-temperature superconductors are one of the \nmost 
 promising candidate devices in this frequency range. In order to \ngenerat
 e practically useful levels of power from these stacks\, it is \nnecessary
  to obtain efficient phase-synchronised emission from the \nlargest possib
 le number of individual Josephson junctions. I will \ndiscuss recent progr
 ess made at Argonne towards this goal\, and possible \napproaches for gene
 rating power levels in the milliwatt range\, which are \nnecessary for mos
 t applications. \n
LOCATION:Small Lecture Theatre\, Cavendish Laboratory\, Department of Phys
 ics
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