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. 2020 Mar 25;10:5428. doi: 10.1038/s41598-020-62112-w

Figure 1.

Figure 1

(a) Simplified schematic of SERDS experimental layout. ECDL: external cavity diode laser; BP: bandpass filter; NDF: neutral density filter; EF: edge filter; Obj: microscope objective; S: sample. (b) Diagrams of Raman scattering and fluorescence in a molecular system containing both electronic ground and excited states with multiple vibrational modes. Here, we assume that the excited electronic state contains a continuum of vibrational modes. The wavy lines indicate non-radiative decay.