Resonance enhancement of two-photon absorption in porphyrins
نویسندگان
چکیده
Two-photon absorption spectra in absolute cross-section values are presented for a number of octaethyl-, tetraphenyl-, and tetrabenzo-substituted porphyrins. In excitation spectral region of 710–810 nm, the two-photon absorption efficiency is resonantly enhanced due to nearby Q(0–0) one-photon transition. The cross-section value calculated directly from the groundand excited-state absorption parameters in a single intermediate level approximation, agrees well with that measured in experiment. 2002 Elsevier Science B.V. All rights reserved.
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