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

Figure 3

The histograms of the distribution of the Au seeds sizes and pores for five points of por-Au film on the distance from the erosion torch axis (mm): 2, 6, 12, 17, and 22 (from top to down). The deposition regime was the following: one pulse energy 5 J/сm², number of the laser pulses , and argon pressure 100 Pa.