Design of a nearfield probe for optical recording using a 3-dimensional finite difference time domain method

Kusato Hirota, Tom D. Milster, Yan Zhang

Research output: Contribution to journalConference article

1 Scopus citations


The electromagnetic field of tapered dielectric probes for optical recording was examined by the 3D finite-difference time-domain method. The probes with a diameter at the bottom surface of approximately 1/n wavelength exhibited high light beam throughput when compared with conventional metal-coated near-field scanning optical microscope probes. The beam sizes inside the recording media, using LaSFN9 glass and GaP probe, were estimated to be 0.75 and 0.43 wavelength, respectively. The computational study of the scattering field from the recorded mark show that these probe can work in the reflection-detection mode.

Original languageEnglish (US)
Pages (from-to)261-263
Number of pages3
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Dec 1 1999
Externally publishedYes
EventProceedings of the 1999 Joint International Symposium on Optical Memory and Optical Optical Data Storage (ISOM/ODS'99) - Koloa, HI, USA
Duration: Jul 12 1999Jul 15 1999


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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