Observation of fluorescence background suppression in Raman scattering on single

2019-10-10 12:22:53

Raman scattering fluorescence optically microparticles

责任者: Kaiser, T.;Esen, C.;Moritz, H.;Borchers, M.;Schweiger, G. 单位: Maschinenbau, Laseranwendungstechnik, Bochum Univ., Germany 来源出处: Berichte der Bunsengesellschaft fur Physikalische Chemie(Ber. Bunsenges. Phys. Chem. (Germany)),1996/02/,100(2):119-22 摘要: Raman scattering experiments were performed on single optically levitated microparticles. In comparison with bulk experiments an dramatic enhancement of the Raman scattering relative to the fluorescence scattering was observed. Two real-world samples, a monomer for use in laser stereolithography and an engine lubricant, were investigated. Furthermore Dioctylphthalate (DOP), doped with fluorescent dye Coumarin 6, was studied by Raman spectroscopy in a droplet chain, on an optically levitated particle and in a cuvette. The combination of Raman spectroscopy and optical levitation could be a new offspring for analytical applications of Raman spectroscopy. Liquid and solid microparticles with a few nanograms in mass can be investigated by this technique with excellent signal-to-noise ratio 关键词: drops;fluorescence;organic compounds;Raman spectra;spectrochemical analysis;fluorescence background suppression;Raman scattering;single microparticles;optically levitated microparticles;Raman scattering enhancement;fluorescence scattering;engine lubricants;dioctylphthalate;Coumarin 6 additions;droplet chains;signal to noise ratio;nanogram samples;spectrochemical analysis