This article is cited in 28 papers

ATOMS, SPECTRA, RADIATIONS

On the possibility of the nondegenerate parametric amplification of optical waves at low-frequency pumping

A. S. Chirkin, I. V. Shutov

M. V. Lomonosov Moscow State University, Faculty of Physics

Abstract: It is shown that parametric amplification at low-frequency pumping can be implemented in coupled nonlinear optical interactions in aperiodic nonlinear photonic crystals created by the method of the superposition of the modulation of the second-order susceptibility. In this process, the intensities of waves with frequencies higher than the pump frequency increase monotonically with the interaction length as in the case of the traditional process of parametric amplification at high-frequency pumping. The dependence of the gain factor on the coupling constants of interacting waves is obtained. The process under consideration makes it possible to ensure the tuning of the generated frequency in the ultraviolet range upon pumping in the visible range. Analysis of the process is performed on the example of aperiodic nonlinear photonic crystals of lithium niobate.

PACS: 42.15.Eq, 42.25.-p, 42.65.-k, 42.79.Nv

Received: 05.10.2007

 English version: Journal of Experimental and Theoretical Physics Letters, 2007, 86:11, 693–697

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