摘要
利用传输矩阵法对折射率渐变的一维复周期全息光子晶体的带隙结构进行了数值计算,分析了针对记录材料重铬酸盐明胶,在这种光折变介质中存在光子带隙,继而讨论了折射率、折射率调制度、以及介质厚度对光子带隙的影响。通过计算发现,在制作光线正入射时,折射率和折射率调制的改变不影响禁带位置,禁带宽度随着所使用的记录介质折射率的增加而减小,随着介质折射率调制的增加而增加;能够形成一个较好的禁带,对记录介质的厚度要求起码要为8μm。
The band-gap of one-dimensional complex-periodic holographic photonic crystals is calculated by using transfer matrix method.Aiming at the dichromate gelatin recording medium,band-gaps are found in this refractive medium structure,and the effects of the refractive index,refractive index modulation and thickness of the medium on the photonic gaps are discussed.When the light is shining,using calculating to find that the refractive index and refractive index modulation changes does not affect the position of the band-gap,the width of the band-gap decreases with the increase of the refractive index of the recording medium,and increases with the increase of the refractive index modulation.To get a good band-gap,the thickness of the recording medium is at least 8 μm.
出处
《光电技术应用》
2011年第2期53-55,79,共4页
Electro-Optic Technology Application
基金
徐州医学院科研基金(2010KJ21)
关键词
全息
光子晶体
复周期
传输矩阵
holography
photonic crystals
complex-period
transfer matrix method
