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 language | English |
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Pages (from-to) | 964-968 |
Number of pages | 5 |
Journal | Guangzi Xuebao/Acta Photonica Sinica |
Volume | 37 |
Issue number | 5 |
State | Published - May 2008 |
Keywords
- Digital holography
- Optimal developing time
- Photorefractive LiNbO crystal
- Thermal fixing