Quasi-real-time visualizations of dynamics of light-induced index changes during thermal fixing in LiNbO3 crystal

Yu Han Gao, Peng Zhang, Sheng Liu, Tai An Huang, De Xing Yang, Jian Lin Zhao

Research output: Contribution to journalArticlepeer-review

Abstract

The dynamics of Gaussian-beam-induced index changes in LiNbO3:Fe crystal during thermal fixing are visualized in quasi-real-time by using digital holography. The on-line method is employed to fix the light-induced index changes, and an incoherent white beam emitted from a cold light source is used to develop the fixed index changes. By numerically reconstructing the recorded digital holograms, the distributions of light-induced index changes corresponding to different stages of thermal fixing can be obtained. The results illustrate that the reversal of the Gaussian-beam-induced index changes during thermal fixing are visualized in quasi-real-time successfully by employing the digital holography, and the optimal developing time can be obtained by monitoring the evolvement of light-induced index changes.

Original languageEnglish
Pages (from-to)964-968
Number of pages5
JournalGuangzi Xuebao/Acta Photonica Sinica
Volume37
Issue number5
StatePublished - May 2008

Keywords

  • Digital holography
  • Optimal developing time
  • Photorefractive LiNbO crystal
  • Thermal fixing

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