On the possibility of the nondegenerate parametric amplification of optical waves at low-frequency pumping |
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Authors: | A S Chirkin and I V Shutov |
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Institution: | (1) Faculty of Physics, Moscow State University, Moscow, 119992, Russia |
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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.
Original Russian Text ? A.S. Chirkin, I.V. Shutov, 2007, published in Pis’ma v Zhurnal éksperimental’noĭ i Teoreticheskoĭ
Fiziki, 2007, Vol. 86, No. 11, pp. 803–807. |
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