超短脉冲
全息术
丙烯酸酯
材料科学
脉搏(音乐)
单体
光电子学
光学
聚合物
物理
复合材料
激光器
探测器
作者
Diqin Zhang,Yu Zhao,Bin Guo,Zhen Zhang,Jianguo Zhu,Yue Yan,Yuxia Zhao
摘要
Photopolymer is well-recognized as an ideal holographic recording medium, but there is holographic reciprocity law failure in pulse exposure. In this study, the holographic properties of the samples containing an acrylate dendritic monomer with high refractive index (DM-1, n=1.634) are investigated under a 532 nm single-pulse or multi-pulses exposure. The effects of pulse number, spatial frequency, thickness and exposure dosage on diffraction efficiency are discussed. The diffraction efficiency of recorded grating in a sample containing 4% DM-1 (0.5 mm thickness) reaches 77.2% under the 100 pulses exposure. Besides, a grating with diffraction efficiency of 1.35% and narrow selection angle of 0.11° can be recorded in this sample under a single-pulse exposure (8.7 mJ/cm2 exposure dosage), indicating its’ potential in ultrafast holography.
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