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SUMMARY:Linear and nonlinear optics of active terahertz metasurfaces - Pro
 fessor Dan Mittleman\, Brown University
DTSTART:20180309T140000Z
DTEND:20180309T150000Z
UID:TALK101917@talks.cam.ac.uk
CONTACT:Axel Zeitler
DESCRIPTION:In the terahertz region of the electromagnetic spectrum\, ther
 e has been a long-standing interest in the development of devices and comp
 onents to manipulate free-space beams. Metamaterials offer a promising str
 ategy for enabling many capabilities that are otherwise challenging\, such
  as filtering and modulation. In most cases\, these structures are realize
 d as two-dimensional meta-surfaces\, a class of metamaterials where the sc
 attering elements are arranged in a planar array. Because the elements are
  deposited on a dielectric surface\, the optical properties can be modulat
 ed by actively modifying the properties of the surface. This general appro
 ach has revealed a wealth of new phenomena\, opening up many possibilities
  for both linear and non-linear optical interactions in the terahertz rang
 e. In this presentation\, several examples will be described\, including s
 patial light modulation and active electrical control of terahertz optical
  nonlinearity.
LOCATION:Lecture Theatre 2\, Department of Chemical Engineering and Biotec
 hnology\, West Cambridge Site
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