Nonlinear Phenomena in Complex Systems, 2005, Vol.8, No.4, pp.391-395

NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2005, Vol.8, No.4, pp.391-395

The Method of High-efficiency Second Harmonic Generation by Bessel Light Beams.
S. Kurilkina, V. Belyi, and N. Kazak

It has been suggested the method of high efficiency second harmonic generation by Bessel light beams (BLB) based on the usage of interaction of radiation with periodical medium, having anisotropic (uniaxial) nonlinear defect layers. It has been found that necessary conditions for effective frequency transformation are coincidence of the conicity half-angle of BLB with the phase-matching angle for the fundamental frequency and selection of parameters of the layers so that fundamental frequency of the light beam is in the vicinity of photonic band gap border.
Key words: second harmonic generation, periodical layered medium, photonic band gap

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