Recording and reading of three-dimensional optical memory in glasses

S. Juodkazis, A. V. Rode, E. G. Gamaly, Shigeki Matsuo, H. Misawa

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

We report on three-dimensional (3D) optical memory recording and reading in glass by femtosecond pulses. Optically induced dielectric breakdown of glass is a mechanism of recording. The formulae of dielectric breakdown presented are applicable, in principle, for any crystalline or amorphous dielectric material. Scaling dependences of the probabilities of multi-photon and impact ionization are given. The measured threshold of an in-bulk dielectric breakdown of silica was reproduced numerically by implementing the ionization potential of Si (8.15 eV) for calculations. Exact measures of focal spot size and pulse duration at the focus allowed us to evaluate the intensity of a pulse during recording of 3D optical memory bits with high accuracy. The readout of the 3D optical memory was carried out by the white-light continuum generated from the previously damaged sites (recorded memory bits). The mechanism of the readout was a four-photon parametric interaction.

Original languageEnglish
Pages (from-to)361-368
Number of pages8
JournalApplied Physics B: Lasers and Optics
Volume77
Issue number2-3
DOIs
Publication statusPublished - 2003 Sep
Externally publishedYes

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recording
glass
breakdown
readout
photons
pulses
ionization potentials
pulse duration
silicon dioxide
continuums
scaling
ionization
thresholds
interactions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Recording and reading of three-dimensional optical memory in glasses. / Juodkazis, S.; Rode, A. V.; Gamaly, E. G.; Matsuo, Shigeki; Misawa, H.

In: Applied Physics B: Lasers and Optics, Vol. 77, No. 2-3, 09.2003, p. 361-368.

Research output: Contribution to journalArticle

Juodkazis, S. ; Rode, A. V. ; Gamaly, E. G. ; Matsuo, Shigeki ; Misawa, H. / Recording and reading of three-dimensional optical memory in glasses. In: Applied Physics B: Lasers and Optics. 2003 ; Vol. 77, No. 2-3. pp. 361-368.
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