Robust detection of deeply subwavelength pits in simulated optical data-storage disks using photonic jets

Soon Cheol Kong*, Alan V. Sahakian, Alexander Heifetz, Allen Taflove, Vadim Backman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

We report a means to detect deeply subwavelength pits in optical data-storage media by employing the recently observed giant backscattering perturbation phenomenon of the photonic jet. We conducted microwave experiments with dimensionally scaled-up pits and lands in a simulated optical data-storage device. These measurements were backed up by three-dimensional finite-difference time-domain computational solutions of Maxwell's equations. Results indicate that pits having a lateral area of 0.025 square wavelengths, i.e., much smaller than current BluRay device features, can be robustly detected with a contrast ratio approximately 28 dB greater than that provided by a lens system.

Original languageEnglish (US)
Article number211102
JournalApplied Physics Letters
Volume92
Issue number21
DOIs
StatePublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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