Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
852818 | Optik - International Journal for Light and Electron Optics | 2006 | 6 Pages |
Abstract
In this paper, we have investigated the grating erasure of a reduced LiNbO3:Fe crystal with different erasing wavelengths. The overall hologram evolution in the process of grating erasure is nonexponential due to strong absorption which is contrary to the mono-exponential law. The hologram in the rear part of the crystal can persist for a long time in the grating erasure due to weak erasing light intensity by strong absorption, which can enlarge the erasure time constant. From the erasure experiments, the global absorption αd≈5αd≈5 can be taken as the optimum absorption to acquire a good trade-off between the sensitivity and hologram strength in the crystal.
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Authors
Rong Zhu, De’an Liu, Liren Liu, Yuanjun Guo, Zhifang Chai,