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SUMMARY:Nonlinear Optics In Hyperbolic Plasmonic Metamaterials - Prof. Ana
 toly V. Zayats\, King's College London\, UK
DTSTART:20190201T160000Z
DTEND:20190201T170000Z
UID:TALK119689@talks.cam.ac.uk
CONTACT:Dr Anna Ott
DESCRIPTION:The development of dielectric and plasmonic metamaterials and 
 metasurfaces has led to numerous opportunities in designing unusual optica
 l properties and applications. Hyperbolic metamaterials are a class of ani
 sotropic metamaterials which can be constructed in all frequency ranges fr
 om UV to RF. Hyperbolic metamaterials can also be constructed using graphe
 ne/dielectric multilayers. Due to their specific isofrequency surfaces\, t
 hey support high wavevector modes and are crucial for achieving high-resol
 ution imaging\, subwavelength waveguiding\, enhanced nonlinearities and br
 oadband Purcell factors of spontaneous emission. The optical properties of
  such metamaterials can be adjusted over a wide spectral range by geometri
 cal tuning of the constituents forming a metamaterial.  I will discuss non
 linear optical properties of hyperbolic metamaterials based on plasmonic n
 anorods. In particular\, approaches to achieving an active and tunable met
 amaterial platform will be presented for engineering of enhanced second-or
 der and third order (Kerr-type) nonlinearities. The unique combination of 
 strong anisotropy and high nonlinearity allows achieving nonlinear control
  over light polarisation of transmitted or reflected light. The effect of 
 nonlocal optical response on local density of states and a broadband Purce
 ll effect enhancement will be briefly discussed. Using this metamaterial a
 pproach to design nonlinear optical properties opens many new opportunitie
 s and applications in nonlinear optics. 
LOCATION:Cambridge Graphene Centre Seminar Room
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