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. 2000 Sep 12;97(20):10808–10813. doi: 10.1073/pnas.190230097

Figure 3.

Figure 3

(a) Time dependence of ESA (λdet = 550 nm) along with monoexponential fits with constant offset of the B800-B850 complex (□, τS1 = 7 ± 0.5 ps) and the B800-B820 complex (▪, τS1 = 6 ± 0.5 ps) of Rps. acidophila and LH2 of Rb. sphaeroides (○, τS1 = 1.9 ± 0.5 ps) observed after TPE (λexc = 1,310 nm). The traces have been normalized and offset from each other by 0.2. (b) Power dependence of the prefactor in the monoexponential fit to the data of Rb. sphaeroides (○). Power fit: Exponent = 2.2 ± 0.3 (solid line). (c) Power dependence of the constant offset in the fit to the data of Rb. sphaeroides (○). Solid line: Linear fit. (d) Relative intensity of the fluorescence obtained after TPE (λexc = 1,310 nm) with linear and circular polarized light of B800-B850 of Rps. acidophila (□, Ω = 0.80 ± 0.04) and LH2 of Rb. sphaeroides (○, Ω = 0.84 ± 0.04).