Nonvolatile two-color holographic recording in Tb-doped LiNbO3

Myeongkyu Lee, Shunji Takekawa, Yasunori Furukawa, Kenji Kitamura, Hideki Hatano, Satoru Tanaka

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

We have found that Tb-doped near-stoichiometric LiNbO3 crystals have three different types of energy levels: ultraviolet (UV) absorption centers just above the valence band, shallow electron traps slightly below the conduction band, and deep traps located about 1.9eV (λ ≈ 650 nm) below it. Using this shallow trap as an intermediate energy state, two-color holographic recording has been carried out at λ = 852 nm with a UV gating light at 313 nm. A few % of diffraction efficiency was achieved, and the measured two-color sensitivity was 0.01-0.02 cm/J. No reduction of diffraction efficiency was observed during 4 h continuous readout, and the bitor-rate of constructed digital hologram was less than 10-5.

Original languageEnglish
Pages (from-to)1653-1655
Number of pages3
JournalApplied Physics Letters
Volume76
Issue number13
DOIs
Publication statusPublished - 2000 Mar 27

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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