Optical near field generator

摘要

An optical near field probe of high resolution and high efficiency is disclosed. A near field light is generated using a tapered, plane scatterer formed on a substrate surface. The intensity of the near field light is enhanced by making the area of the scatterer smaller than that of a light spot and by selecting the material, shape, and size of the scatterer so as to generate plasmon resonance. An optical near field generator having a high light utilization efficiency can be obtained.