| 对位相全息光栅折射率调制度的估算 |
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| 引用本文： | 李文斌,吴松安.对位相全息光栅折射率调制度的估算[J].湖南科技大学学报(自然科学版),2001,16(2):30-32. |
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| 作者姓名： | 李文斌 吴松安 |
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| 作者单位： | 湘潭工学院数理系, |
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| 摘 要： | 从讨论全息光栅理论出发,推导出位相型全息光栅折射率调制度、平均折射率、乳胶厚度和消隐角之间的关系,从而找到了估算位相型全息折射率调制度的一种新方法.理论分析得知衍射效率η与曝光量E的关系主要取决于全息光栅折射率调制度n1.同时,在波长为632.8nm,参、物光夹角为40°,参物之比为11的情况下,利用KT-D干板获得无吸收调制的位相全息光栅,测得相应的相对衍射效率和Bragg角偏移Δφ的关系曲线,并对其结果进行具体分析.图3,参5.
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| 关 键 词： | 位相全息 体全息图 全息光栅 折射率调制度 |
| 文章编号： | 1000-9930(2001)02-0030-03 |
| 修稿时间： | 2000年7月24日 |
The estimate of the refractive index modulation of phase holographic grating |
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| LI Wen-bin,WU Song-an.The estimate of the refractive index modulation of phase holographic grating[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2001,16(2):30-32. |
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| Authors: | LI Wen-bin WU Song-an |
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| Abstract: | Based on theory of hologram grating,the relationship among refractive index modulation,average index,emulsion thickness,and dissipative angles has been discussed.A method for estiating therefractive indx modulation of phase holographic grating is obtained.The analysis indicate that the relation of diffraction efficiency and exposure amount lie on refractive index modulation of holographic grating.When wavelength is 632.8 nm,the angle of reference beam and object beam is 40 0,and the intensity ratio of reference beam and object beam is 1:1,made use of KY-D interference board,the non-absorption phase holographic grating is obtained,the correlation curve of relative diffraction efficiency and Bragg angular deviation is measured and the result is analyzed.3figs.,5refs. |
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| Keywords: | phase hologram volume hologram holographic grating refractive index modulation |
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