On the effects of the time gate position and width on the signal-to-noise ratio for detection of Raman spectrum in a time-gated CMOS single-photon avalanche diode based sensor

•Signal-to-noise ratio optimization in time-gated Raman spectroscopy is proposed.•The optimum time gate depend on the ratio of Raman to fluorescence photons.•Acceptable timing in-homogeneities of 2-D SPAD detector arrays can be estimated. The effects of the position and width of the time gate on the...

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