Surface plasmons enhanced shg and sfg
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Surface Plasmons Enhanced SHG and SFG. Yi Rao 07-15-08. w IR. w SUM. w IR. w VIS. w VIS. Interface. ω VIS. ω SF. ω IR. SHG and SFG. Interface-selective Coherent process. Second order process has low yield. Surface Plasmons and SHG. SHG: Diffusive Depolarized. Cu Au.

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Shg and sfg

wIR

wSUM

wIR

wVIS

wVIS

Interface

ωVIS

ωSF

ωIR

SHG and SFG

  • Interface-selective

  • Coherent process

Second order process has low yield


Surface plasmons and shg
Surface Plasmons and SHG

SHG:

Diffusive

Depolarized

Cu Au

Enhancement factor 104


Surface plasmons and sfg
Surface Plasmons and SFG

Local field(Surface plasmon), Interparticle coupling (particle space)



Future direction
Future direction

  • Enhancement Mechanisms of Enhanced SHG and SFG

  • Improving enhancement factor

  • Extend enhancement into more systems

1014


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