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泵浦光调制对Ce∶KNSBN光折变晶体全息存储质量的改善
Improvement of Holographic Storage Quality by Pump Beam Modulation inCe∶KNSBN Photorefractive Crystal
【摘要】 实验研究了泵浦光斩波、斩波占空比、斩波频率对两波耦合过程及光扇噪声的影响 ,结果说明斩波调制抑制了光扇噪声 ,Ce∶KNSBN晶体体全息存储再现图像质量得到明显改善
【Abstract】 The two-beam coupling process and the fanning noise in a Ce∶KNSBN crystal are experimentally studied as a function of the pump beam modulation frequency and the duty ratio. The results show that the fanning noise is restrained and the quality of the reconstructed image is improved with a suitable modulation frequency.
【关键词】 光折变;
光扇;
体全息存储;
再现性改善;
【Key words】 Photorefractivity; Fanning; Volume holographic storage; Reproduction improvement;
【Key words】 Photorefractivity; Fanning; Volume holographic storage; Reproduction improvement;
【基金】 河北省自然科学基金 (批准号 :10 10 5 9);河北省科技厅(批准号 :32 135 10 4 )资助项目
- 【文献出处】 光子学报 ,Acta Photonica Sinica , 编辑部邮箱 ,2004年10期
- 【分类号】O438.1
- 【被引频次】6
- 【下载频次】56