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The Behaviour of χ^{(2)} Grating Encoding Function

100%

Chmela P.

Acta Physica Polonica A

1999

vol. 95

issue 5

735-741

A new phenomenological model of self-organized second-harmonic generation is proposed describing the photoinduced χ^{(2)} grating formation as a cumulative third-order nonlinearity via a complex χ^{(2)} encoding function being dependent upon the light intensities of fundamental and second-harmonic writing radiations. The theoretical results attained are confronted with recent experimental measurements by Lambelet and Feinberg and the χ^{(2)} encoding function is constructed for this special case.

First Experimentally Observed Self-Organized Parametric down Conversion in Optical Fibers

51%

Chmela P., Samek O., Minarčík M.

Acta Physica Polonica A

2001

vol. 99

issue 1

125-134

The theoretically predicted self-organized parametric down conversion (the amplification of fundamental radiation on account of the energy of second-harmonic radiation) in doped optical fibers was experimentally demonstrated for the first time and a weak permanent second-order susceptibility grating in the conditioned fiber was identified.

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2 Acta Physica Polonica A

1 2001

1 1999

2 Chmela P.

1 Minarčík M.

1 Samek O.

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The Behaviour of χ^{(2)} Grating Encoding Function

First Experimentally Observed Self-Organized Parametric down Conversion in Optical Fibers