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. 2021 Aug 6;12(9):5439–5451. doi: 10.1364/BOE.432052

Fig. 2.

Fig. 2.

Peak shift of the fluorescence of R6G in transmission measurement for different sample thicknesses. For this study, it is essential to know the thickness for a given peak shift. The x-axis is given in wavelength representation (a) or wavenumber representation (b); in both cases, the y-axis shows the thickness of the fluorescing media.