Three-dimensional modeling of amplitude-object imaging in scanning near-field optical microscopy

Elena Vasilyeva*, Allen Taflove

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


The imaging properties of the transmission-illumination mode of a scanning near-field optical microscope are investigated. Three-dimensional calculations of the power transmitted into classically allowed and forbidden regions for a nonsymmetrically positioned amplitude object are implemented by use of the finite-difference time-domain solution of Maxwell's equations. The evolution of the images with the distance from the object as well as the effect of the polarization of the illumination is shown. The computations show that for applications involving the imaging of an amplitude object, the use of the allowed light is preferred. Collection of light from both the allowed and the forbidden zones leads to degraded contrast and resolution.

Original languageEnglish (US)
Pages (from-to)1155-1157
Number of pages3
JournalOptics Letters
Issue number15
StatePublished - Aug 1 1998

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Three-dimensional modeling of amplitude-object imaging in scanning near-field optical microscopy'. Together they form a unique fingerprint.

Cite this