Optical Characterization of SERS Substrates Based on Porous Au Films Prepared by Pulsed Laser Deposition

Figure 5

The SERS spectra of R6G 10⁻⁷ Mol/L on the prepared SERS substrates based on the por-Au films in five points with thickness increase from top to down. The corresponding distances from the torch axis are 22, 17, 12, 6, and 2 mm. In the insertion the dependencies of the SERS signal intensity at 612 сm⁻¹ (а) and 1649 сm⁻¹ (b) for the mentioned five points are shown.