Dramatic enhancement of third-harmonic generation in three-dimensional photonic crystals.
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Physical review letters
دوره 92 8 شماره
صفحات -
تاریخ انتشار 2004