Dramatic enhancement of third-harmonic generation in three-dimensional photonic crystals.
We have observed a dramatic enhancement of third-harmonic generation in 3D polystyrene-air photonic crystals pumped by a near infrared laser beam. As the pump wavelength is tuned, the peak of the enhancement occurs when the third-harmonic wavelength approaches the short-wavelength edge of the band gap. We show that the origin of the enhancement is phase matching provided by the periodic structure of the photonic crystals.
The Institute for Lasers, Photonics and Biophotonics, Departments of Chemistry and Physics, University at Buffalo, State University of New York at Buffalo, Buffalo, New York 14260, USA.
Przemyslaw P
PP
Markowicz
Hanifi
H
Tiryaki
Haridas
H
Pudavar
Paras N
PN
Prasad
Nick N
NN
Lepeshkin
Robert W
RW
Boyd