Ojf. Martin et C. Girard, CONTROLLING AND TUNING STRONG OPTICAL-FIELD GRADIENTS AT A LOCAL PROBE MICROSCOPE TIP APEX, Applied physics letters, 70(6), 1997, pp. 705-707
We show that strong optical field gradients can be created at the tip
apex of a local probe microscope illuminated by an external light sour
ce. We demonstrate that these confined fields can be easily, precisely
and continuously tuned by changing the polarization and the incidence
of the external field. We also investigate the topology of the field
intensity in the tip-surface junction. (C) 1997 American Institute of
Physics.