Lasing From a Förster Transfer Fluorescent Dye Couple Dissolved in a Chiral Nematic Liquid Crystal | Zendy

Chambers M. | Zendy; Fox M. | Zendy; Grell M. | Zendy; Hill J. | Zendy

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Lasing From a Förster Transfer Fluorescent Dye Couple Dissolved in a Chiral Nematic Liquid Crystal

Author(s) -

Chambers M.,

Fox M.,

Grell M.,

Hill J.

Publication year - 2002

Publication title -

advanced functional materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 6.069

H-Index - 322

eISSN - 1616-3028

pISSN - 1616-301X

DOI - 10.1002/adfm.200290010

Subject(s) - lasing threshold , materials science , liquid crystal , fluorescence , dye laser , optoelectronics , laser , common emitter , excitation , exciton , wavelength , optics , photochemistry , physics , condensed matter physics , chemistry , quantum mechanics

Förster exciton transfer from a ’sensitizer’ to an ’emitter’ dye allows for the decoupling of the excitation and emission processes in dye lasers. Here, we report on the lasing from a Förster transfer couple dissolved in an unconventional, mirrorless resonator; namely, a chiral nematic liquid crystal (CNLC). We found optically pumped lasing at a threshold as low as 2.1 J m –2 . We also demonstrate simultaneous lasing at two widely separated wavelengths.

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