NTU GIEE

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Outline

• Fundamental studies of surface plasmon
• Bragg scattering of surface plasmon polaritons
  on extraordinary
• transmission through silver film perforated
  with periodic hole arrays
• Dispersion of surface plasmon polaritons on
  silver film with rectangular
• hole arrays in a square lattice
• Plasmonic Infrared thermal emitter
• High performance mid-infrared narrow-band
  plasmonic thermal emitter
• Two color squared-lattice plasmonic thermal
  emitter
• The coupling characteristics between surface
  plasmon on top and bottom
• metals of infrared plasmonic thermal
  emitter

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Zero-order transmission spectra
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Introduction
IR light source can be

• Glowbar
• Advantage---ohm heating
• Disadvantage---boradband emission spectrum
• ?-V semiconductor (1 or 2 µm)
• Advantage---narrow bandwidth
• Disadvantages---low temperature operation, high
  cost
• Multilayer thin film structure---light source
  filter
• Advantage---tunnable emission window
• Disadvantage---not on chip
• The features of plasmonic thermal emitter
• Ohm heating, low cost, system on chip
• Narrow bandwidth 0.5µm
• Emission peak wavelength is determined by the
  period of the
• periodic metal structure
• --- the genes that are responsible to the
  infrared light can be identified

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Emission spectra of the plasmonic thermal emitter
A/M(1,0)

• Hexagonal lattice
• - one specific peak
• Square lattice
• - two peaks

D/M(1,0)
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