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. 2022 Mar 25;13(4):2467–2487. doi: 10.1364/BOE.450993

Fig. 2.

Fig. 2.

(a) Schematic view of the sample holder dedicated to co-localization experiments. The top of the sample holder is covered with a 1 mm thick Raman-grade CaF2 window. The skin sample is gently pressed against the CaF2 using a glass plate positioned below the skin sample and moved upwards using a retaining ring. Immersion medium is added on top of the sample holder. (b) Picture of the sample holder.