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(a) Intensity curve for estimating the field of view of the CRS module. The inset shows the spectrum of polystyrene. (b) Intensity curve for estimating the nominal sensing depth of the CRS module. The inset shows the relation between the current of the ETL and the focal position in the axial dimension. (c) The spatial resolutions of the RS module. The inset shows the spectrum of Nile red fluorescence beads.
