6533b7defe1ef96bd1275dfb
RESEARCH PRODUCT
Microchip Random Laser based on a disordered TiO2-nanomembranes arrangement
Denis ChaumontAnderson S. L. GomesChristian T. DominguezCid B. De AraújoM. SacilottiYvon Lacroutesubject
Materials sciencePhysics::Optics02 engineering and technology01 natural sciencesLight scatteringlaw.inventionRhodamine 6Gchemistry.chemical_compoundCondensed Matter::Materials ScienceOpticslaw0103 physical sciencesSCATTERING010306 general physicsDye laserRandom laserbusiness.industry021001 nanoscience & nanotechnologyLaserAtomic and Molecular Physics and OpticschemistryOptoelectronicsPhotonics0210 nano-technologybusinessRefractive indexLasing thresholddescription
International audience; We developed a new scheme for obtaining coherent random lasing based on a chip consisting of a polymer film doped with Rhodamine 6G, having as scatterers butterfly-like TiO2 nanomembranes (TiO2-NM) supported on a glass substrate. The feedback mechanism for laser action is due to the multiple scattering of light by TiO2-NM rather than provided by localized variations of the refractive index in the polymer film. The above-threshold multiple spikes signature indicative of random laser emission with coherent feedback is confirmed. As nanomembranes are foreseen as new MEMS/NEMS building blocks, a new generation of combined active/passive photonic devices can be envisaged.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 |