Vasnetsov, M.V.M.V.VasnetsovSlussarenko, S.S.S.S.SlussarenkoStumpe, J.J.StumpeSakhno, O.O.SakhnoSlussarenko, S.S.S.S.SlussarenkoAbbate, G.G.Abbate2022-03-042022-03-042010https://publica.fraunhofer.de/handle/publica/22140810.1080/15421400903408509A composite LC/polymer structure, patented as POLIPHEM, when properly doped with a dye is a promising material for compact tunable laser sources. We analyze the properties of distributed feedback system in a form of volume periodic grating in a medium with gain. The conditions required for lasing threshold achievement are considered for second-order Bragg diffraction regimes. First experimental results on the lasing in POLIPHEM DFB oscillator are reported.en668548journal article