Surface Plasmons Enhanced SHG and SFG

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Surface Plasmons Enhanced SHG and SFG

• Yi Rao
• 07-15-08

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SHG and SFG

• Interface-selective
• Coherent process

Second order process has low yield
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Surface Plasmons and SHG
SHG Diffusive Depolarized
Cu Au
Enhancement factor 104
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Surface Plasmons and SFG
Local field(Surface plasmon), Interparticle
coupling (particle space)
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Preliminary Results (SFG)
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Future direction

• Enhancement Mechanisms of Enhanced SHG and SFG
• Improving enhancement factor
• Extend enhancement into more systems

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