Near-infrared distributed feedback laser emission based on cascade Förster resonance energy transfer to Nile Blue aggregates
作者： K. Parafiniuk , L. Sznitko , M. Zelechowska , J. Mysliwiec
DOI: 10.1016/J.ORGEL.2016.03.007
关键词: Photochemistry 、 Distributed feedback laser 、 Organic laser 、 Stimulated emission 、 Dye laser 、 Optoelectronics 、 Lasing threshold 、 Laser 、 Chemistry 、 Rhodamine 6G 、 Rhodamine B
摘要: Abstract We present the real time tunable distributed feedback lasing in region of near-infrared light obtained a dye doped polymeric layer via cascade energy transfer based on Forster resonance (FRET). The Rhodamine 6G and B laser dyes were used as donor for FRET effect, while Nile Blue served an acceptor. shift emission from visible to was possible due formation aggregates lower than molecules levels. Therefore, through sequence transfers between aggregates, excitation stimulated spectra about 200 nm can be achieved. use periodically modulated pumping beam pulsed Nd:YAG allows select amplify particular wavelength gain profile according Bragg conditions, what easily tuned by changing period interference pattern. reported tunability 725 nm 745 nm confirmed that only involved action, well acceptor non-aggregated form, acted canal transfer.
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