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Bifurcation properties of the bremsstrahlung harmonics generated by a pumping field in plasmasLebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation Nonlinear generation of odd harmonics of the electromagnetic pumping field in a fully ionized plasma is briefly surveyed. Two threshold bifurcation properties of the harmonics are discussed, viz. the splitting of the peak of their intensity as a function of the degree of circular polarization of the pumping field and, at a somewhat higher threshold, the emergence of nonzero-intensity harmonics with complete circular polarization in a pumping field with a partial circular polarization.
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