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. 2017 Mar 14;22(3):030901. doi: 10.1117/1.JBO.22.3.030901

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Fig. 13 — (a) ${\tilde{Σ}}_{R} (l_{c})$ , (b) ${\tilde{Σ}}_{L} (l_{c})$ , and (c) $\tilde{Σ} (l_{c})$ as a function of the NA of light collection for a sample with $L = 2 μ m$ .