Title :
Finite-difference time-domain analysis of hemi-teardrop-shaped near-field optical probe
Author_Institution :
Nihon Univ., Tokyo
Abstract :
A hemi-teardrop-shaped probe designed to produce an intense optical near-field to a subwavelength spatial dimension is presented. The influence of probe shape on optical near-field enhancement is investigated using the finite-difference time-domain method. The numerical results show that the resonant wavelength can be controlled by adjusting the sharpness of the object.
Keywords :
finite difference time-domain analysis; near-field scanning optical microscopy; optical materials; probes; finite-difference time-domain analysis; hemi-teardrop-shaped probe; near-field optical probe; optical near-field enhancement; resonant wavelength; subwavelength spatial dimension;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080068
