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First observation of DFB lasing in polarization gratings written in azobenzene film

: Goldenberg, L.M.; Lisinetskii, V.; Gritsai, Y.; Stumpe, J.; Schrader, S.


Laser physics letters 10 (2013), No.8, Art. 085804, 5 pp.
ISSN: 1612-2011
ISSN: 1612-202X
Journal Article
Fraunhofer IAP ()

For the first time the fabrication of DFB laser devices based on polarization gratings in azobenzene-containing materials has been exploited. The gratings were inscribed by polarization holography in a layer of an azobenzene oligomer doped with a fluorophore (laser dye pyridine 1 or pyridine 2). The single step inscription of a polarization grating in this layer leads directly to a DFB laser device. The devices exhibited a lasing threshold of about 0.2-0.3 mJ cm-2.