We report the four-photon-excited fluorescence emission of (7-benzothiazol-2-yl-9,-didecylfluoren-2-yl)-diphenylamine in hexane and its four-photon absorption cross-section /spl sigma/' = 8/spl middot/10/sup -109/ cm/sup 8/ s/sup 3/ /spl middot/photon/sup -3/ for the transition S/sub 0/ to S/sub 1/, when excited at 1600 nm. This value is 10/sup 11/ times larger than that of naphthalene.
Three and four-photon absorption of a multiphoton absorbing fluorescent probe
Conference on Lasers and Electro-Optics, 2004. (CLEO). ; 1 ; 3 pp. vol.1
2004-01-01
36555 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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