|| D. S. Correa, L. Boni, D. S. Santos, Jr., N. M. B Neto, O. N. Oliveira, Jr., S. C. Misoguti Zilio, and C. R. Mendonca, “Reverse saturable absorption in chlorophyll a,” Appl. Phys. B, vol. 74, pp. 559–561, 2002.  L. De Boni, D. S. Chorrea, F. J. Pavinatto, D. S. Dos Santos, Jr., and C. R. Mendonca, “Excited state absorption spectrum of chlorophyll a obtained with white-light continuum,” J. Chem. Phys., vol. 126, pp. 165102– 165104, 2007.  H. Linschitz and K. Sarkanen, “The absorption spectra and decay kinetics of the metastable states of chlorophyll A and B,” J. Amer. Chem. Soc., vol. 80, pp. 4826–4832, 1958.  J. Baugher, J. C. Hindman, and J. J. Katz, “Determination of the triplet and excited singlet absorption spectra of chlorophyll a with a tunable dye laser,” Chem. Phys. Lett., vol. 63, pp. 159–162, 1979.  N.V. Tkachenko,D.Grandell, M. Ikonen, A. Jutila,V. Moritz, andH. Lemmetyinen, “Excitation energy relaxation in chlorophyll a Langmuir– Blodgett multilayer films,” Proc. SPIE, vol. 1921, pp. 254–260, 1992.PubMed ID17477634
||The theoretically simulated switching characteristics namely,
the variation in the normalized transmission of probe beam intensity
(NTPI) with time, obtained by computer simulations, using
(1)–(9), considering the S0 , S1 , and T1 states, corresponding
to the experimental conditions with typical parameters given in
Table I [primary sources], are shown in Fig. 3(b).