Femtosecond laser induced PL change in Sm-doped sodium borate glass and 3D optical memory

Seungphil Lee, Myeongkyu Lee, Kisoo Lim

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14 Citations (Scopus)


We report on a femtosecond laser-induced photoluminescence (PL) change in Sm-doped sodium-borate glass and its potential application to three-dimensional optical memory. Irradiation with a femtosecond pulsed laser (800 nm, 1 kHz, 100 fs) induced a new PL peak near 682 nm, resulting from the photoreduction of Sm ions from Sm3+ to Sm2+. This makes it possible to readout the stored data by detecting the new PL peak as a signal. Multilayer patterns of various dot sizes and interlayer spacings were fabricated by femtosecond pulsed laser. These patterns were read out by a fluorescent confocal microscope which detected the emission at 682 nm as a signal. Here we discuss the feasibility of 3D optical memory by use of PL change in Sm-doped sodium borate glass.

Original languageEnglish
Pages (from-to)990-992
Number of pages3
JournalJournal of Luminescence
Issue number1-2
Publication statusPublished - 2007 Jan

Bibliographical note

Funding Information:
This work was supported by Korea Research Foundation Grant (KRF-2003-042-C00046).

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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