Figure 5

(a–c) Experimental measurements of the maximum SHG signal from an isolated NR. (a,b) correspond to the quadratic dependence of the SHG signal on the laser input power for linear and radial polarizations, respectively, and for different NR orientations. (c) The maximum SHG signal as a function of the NR tilt angle for linear (blue) and radial (red) polarizations and for an average input power of 10 mW. The dashed curves (red and blue) serves as guides to the eye.