High-density optical data storage enabled by the photonic nanojet from a dielectric microsphere

Soon Cheol Kong*, Alan Varteres Sahakian, Allen Taflove, Vadim Backman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We discuss the usage of the photonic nanojet to detect deeply subwavelength pits in a metal substrate for the purpose of high-density optical data storage. Three-dimensional finite-difference time-domain (FDTD) computational solutions of Maxwell's equations are used to analyze and design the system. We find that nanojet-illuminated pits having lateral dimensions of only 100 × 150nm2 yield a 40-dB contrast ratio. The FDTD simulation results show that pit-depth modulation and pit-width modulation can significantly increase the optical datastorage capacity.

Original languageEnglish (US)
Article number03A008
JournalJapanese Journal of Applied Physics
Volume48
Issue number3 PART 2
DOIs
StatePublished - Mar 1 2009

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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