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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Surface Plasmons Enhanced SHG and SFG

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Surface plasmons enhanced shg and sfg

Surface Plasmons Enhanced SHG and SFG

Yi Rao

07-15-08


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)


Preliminary results sfg

Preliminary Results (SFG)


Future direction

Future direction

  • Enhancement Mechanisms of Enhanced SHG and SFG

  • Improving enhancement factor

  • Extend enhancement into more systems

1014


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