Optical Field Measurement of Nano-Apertures with a Scanning Near-Field Optical Microscope

  • We investigate optical near-field distributions of the unconventional C-apertures and the conventional square apertures in preliminary experiment with an aperture scanning near-field optical microscope. These nano-apertures are fabricated in Au film on a glass substrate with focused ion beam technology. The experimental results indicate the uptrend of output light intensity that a C-aperture enables the intensity maximum to increase at least 10 times more than a square aperture with same unit length. The measured near-field light spot sizes of C-aperture and square aperture with 200-nm unit length are 439nm×500nm and 245nm×216nm, respectively.
  • Article Text

  • loading

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return