Optimization of s-Polarization Sensitivity in Apertureless Near-Field Optical Microscopy
Figure 2
Theoretical calculation of electric field distributions near an ellipsoidal metallic nanoparticle under (a) p-polarization and (b) s-polarization excitations. The horizontal dotted lines indicate the sample surface. Strong field confinement can be seen near the apex between the sample and the probe in p-polarization, which is almost negligible in s-polarization.
