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Lasing in the dye doped nematic liquid crystal at the dynamic distributed feedback

Igor Ilchishin ,Pavel Maslov , Eugene Tikhonov , Sergey Lipnitsky
Institute of Physics of NAS of Ukraine
Lasing in the dye doped nematic liquid crystal(NLC) at the dynamic distributed feedback (DDF) induced in the active medium by counter propagating beams is presented. Estimates of the contribution of amplitude and phase grating to the forward-backward wave interaction in arising periodic structure are made. The narrow frequency tunable emission against the background wide spectrum of the super luminescence is gained, manifesting the oscillation under DDF. Opportunities of control and increase of contrast relation for laser emission are discussed.

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