Optical limiting in short chain basket handle porphyrins

Sevian, Armen ; Ravikanth, M. ; Kumar, G. Ravindra (1996) Optical limiting in short chain basket handle porphyrins Chemical Physics Letters, 263 (1-2). pp. 241-246. ISSN 0009-2614

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00092...

Related URL: http://dx.doi.org/10.1016/S0009-2614(96)01156-6


Optical limiting under picosecond excitation at 532 nm is reported in a set of recently synthesized basket handle porphyrins. The effect is attributed to reverse saturable absorption. Theoretical simulations using a rate equation model satisfactorily reproduce the measurements and establish values for excited state cross-sections and lifetimes.

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