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Lasing by second-order bragg diffraction in dye-doped POLIPHEM gratings

: Vasnetsov, M.V.; Slussarenko, S.S.; Stumpe, J.; Sakhno, O.; Slussarenko, S.S.; Abbate, G.


Molecular Crystals and Liquid Crystals 516 (2010), pp.159-166
ISSN: 0026-8941
ISSN: 1542-1406
Journal Article
Fraunhofer IAP ()

A 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.