Fig. 13From: Integrated enhanced Raman scattering: a review(Reprinted with permission from Ref. [62])Comparison of SERS background power PBG (x-axis) and SERS Stokes power PS (y-axis) of different SERS platforms. Both parameters are normalized on the input power and the integration time. FS indicates free-space and WG is the waveguide-based excitation.Back to article page