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SUMMARY:Antennas for light and their applications in classical optics - Dr
  Rupert Oulton\, Imperial College 
DTSTART:20190718T150000Z
DTEND:20190718T163000Z
UID:TALK127180@talks.cam.ac.uk
CONTACT:Microsoft Research Cambridge Talks Admins
DESCRIPTION:Gold particles with dimensions of about a hundred nanometres a
 re resonant at visible wavelengths and thus serve as antennas for light. O
 ver the past two decades\, nano-fabrication technology has advanced to the
  point where a wide range of applications for optical antennas are now pos
 sible. Individually they may be exploited for sensing at the sensitivity o
 f single molecules and within arrays they can be deployed to realise thin 
 and planar optical elements\, such as lenses and polarisers. In this talk\
 , I will discuss some of the contemporary themes in this diverse field\, a
 nd in particular their applications in classical optics. Each example high
 lights a key advantage of optical antennas: e.g. using their nanometric sc
 ale to quantify lens aberration\; or using their tightly focussed optical 
 field to realise strong nonlinear optical effects for optical pulse charac
 terisation. I will also review our work on hot electrons: remarkably\, the
  electrons excited by light in metals can be over 1000 oC hotter than thei
 r surroundings! This could enable new and potentially inexpensive infrared
  detectors.\nPlease visit aka.ms/OpticsForTheCloud to secure your place
LOCATION:Auditorium\, Microsoft Research Ltd\, 21 Station Road\, Cambridge
 \, CB1 2FB
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