Dark states in 4,4´-bis(diphenylamino)stilbene-based dendrimers studied by three-photon absorption

Author

Drobizhev, M. ; Karotki, A. ; Rebane, A. ; Spangler, C.W.

Author_Institution

Dept. of Phys., Montana State Univ., Bozeman, MT, USA

fYear

2002

fDate

19-24 May 2002

Firstpage

51

Lastpage

52

Abstract

Summary form only given. In our recent study of 4,4´-bis(diphenylamino)stilbene-based dendrimers we have found that in contrast to parent, DPAS molecule, the dendrimers possess dark states, lying lower in energy than the first S/sub 0/ - S/sub 1/ transition. In three photon absorption (3PA) measurements, we use fluorescence method and femtosecond pulses, which give intrinsic values of 3PA cross-section. 3PA spectra were obtained by tuning an optical parametric amplifier.

Keywords

dark states; fluorescence; high-speed optical techniques; multiphoton spectra; optical parametric amplifiers; optical tuning; organic compounds; time resolved spectra; 3PA cross-section; 4,4´-bis(diphenylamino)stilbene-based dendrimers; S/sub 0/ - S/sub 1/ transition; dark states; femtosecond pulses; fluorescence method; optical parametric amplifier tuning; three photon absorption measurements; three-photon absorption; Fluorescence; Optical parametric amplifiers; Organic compounds; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the

Conference_Location

Long Beach, CA, USA

Print_ISBN

1-55752-708-3

Type

conf

DOI

10.1109/QELS.2002.1031079

Filename

1031079