Dendrimer molecules with record large two-photon absorption cross section

Drobizhev, M.; Karotki, A.; Rebane, A.; Spangler, C. W. (2001). Dendrimer molecules with record large two-photon absorption cross section. Opt. Lett., 26 (14), 1081-1083.
ajakirjaartikkel
Drobizhev, M.; Karotki, A.; Rebane, A.; Spangler, C. W.
Opt. Lett.
0146-9592
26
14
2001
1081-1083
Ilmunud
1.1. Teadusartiklid, mis on kajastatud Web of Science andmebaasides Science Citation Index Expanded, Social Sciences Citation Index, Arts & Humanities Citation Index ja/või andmebaasis Scopus (v.a. kogumikud)
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English, We report what is to our knowledge a record high value for an intrinsic two-photon absorption (TPA) cross section, sigma (2) = 11 x 10(-47) cm(4) s photon(-1) molecule(-1), measured with femtosecond pulses in a new dendrimer molecule comprising 29 repeat units of 4,4 ' -bis(diphenylamino)stilbene chromophore. We measure the dependence of TPA on excitation wavelength in three consecutive generations of the dendrimer and show that the maximum sigma (2) value increases faster than the total number of stilbene chromophores. This result indicates that it is possible to obtain even larger sigma (2) values in higher generations of this dendrimer family. (C) 2001 Optical Society of America.
OPTICAL-DATA STORAGE; 2-PHOTON ABSORPTION; EXCITATION; DYNAMICS; DESIGN