Title :
Ultrafast exciton response of high optical density J-aggregates from ultrathin films of cyanine dyes
Author :
Atay, Tolga ; Zhang, Qiang ; Nurmikko, Arto ; Tischler, Jonathan ; Bradley, Scott ; Bulovic, Vladimir
Author_Institution :
Dept. of Phys., Brown Univ., Providence, RI
Abstract :
Ultrathin films of cyanine dye J-aggregates show extraordinary exciton cross sections. Exciton dynamics are studied by ultrafast pump-probe and transient photoluminescence spectroscopy. An exciton delocalization length of N=18 monomers was measured at room temperature.
Keywords :
dyes; excitons; high-speed optical techniques; optical films; photoluminescence; cyanine dyes; exciton delocalization; high optical density J-aggregates; temperature 293 K to 298 K; transient photoluminescence spectroscopy; ultrafast pump-probe spectroscopy; ultrathin films; Absorption; Bleaching; Excitons; Nonlinear optics; Optical films; Optical polymers; Optical pumping; Photoluminescence; Temperature; Ultrafast optics; (190.4710) Optical Nonlinearities in organic materials; (190.7110) Ultrafast Nonlinear Optics;
Conference_Titel :
Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-55752-813-1
Electronic_ISBN :
978-1-55752-813-1
DOI :
10.1109/CLEO.2006.4629078
