6533b82efe1ef96bd1292674
RESEARCH PRODUCT
Distributed feedback lasing in cellulose films
Andrii VaranytsiaRudolf ZentelBahman TaheriT. KosaPeter Palffy-muhorayA. MunozDaniel Wenzliksubject
Materials sciencebusiness.industryCholesteric liquid crystalDopingPhysics::OpticsElectronic Optical and Magnetic Materialschemistry.chemical_compoundOpticschemistryLiquid crystalElectric fieldOptoelectronicsPhysics::Chemical PhysicsThin filmCellulosebusinessChirality (chemistry)Lasing thresholddescription
Cellulose derivatives, because of their molecular structure and chirality, can self-assemble to form spatially periodic cholesteric liquid crystal phases. We have synthesized and produced solid cross-linked cholesteric cellulose based films optimized to provide high reflectivity. Since these films are self-assembled photonic bandgap materials, they may be expected to show distributed feedback lasing. By doping samples with fluorescent dyes and optically pumping thin films of these materials, we were able to demonstrate, to the best of our knowledge, for the first time, mirrorless band-edge lasing in cellulose derivatives.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-12-20 | Optical Materials Express |