Lightning rod effect in surface-enhanced second harmonic generation
Aktsipetrov O. A. , Baranova I. M. , Mishina E. D. , Petukhov A. V.
The second harmonic intensity is increased by a factor of more than 105 when light is reflected from a system of sharp conical points. This intensity is two orders of magnitude greater than the previously observed amplification by a system of ellipsoids.