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An anti-Stokes-shifted doublet of guided modes in a photonic-crystal fiber selectively generated and controlled with orthogonal polarizations of the pump field
Applied Physics B. 79, 805–809 (2004)，-0001，（）：
Nonlinear-optical spectral transformation of unamplified 30-fs Ti: sapphire laser pulses in a birefringent fused-silica photonic-crystal fiber is shown to result in the efficient generation of a doublet of two physically distinct states of the anti-Stokes radiation field. These states, corresponding to the first doublet of high-order guided modes of the photonic-crystal fiber, have close spectral contents, but different intensity profiles and different beam-pattern geometries relative to the cross-section structure of the fiber. We demonstrate that these two states of the anti-Stokes field are robust with respect to fiber bending and can be independently generated, as well as selectively addressed and controlled, due to the fiber birefringence, with orthogonal polarizations of the input pump field.
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