Abstract
A non-synchronously-numerating experimental system is applied in this research. The effect of the incident beam intensity I and the beam incident angle θ on beam fanning effect is investigated with a singular beam incident on Ce:KNSBN crystal. The results show that the beam fanning effect strongly depends on I and ϑ. The threshold effect of I for the beam fanning in Ce:KNSBN crystal is observed, and the threshold intensity of incident beam keeps the same value of 38.2 mW/cm2 for different ϑ, and the steady beam fanning intensity I fsat reaches a peak at ϑ=15° under the same I. In addition, the effect of the incident beam modulated on the beam fanning noise and holographic storage in Ce:KNSBN crystal is studied. And the results suggest that the beam fanning noise is effectively suppressed, and the quality of the reappearance image is greatly improved.
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