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二维全息光子晶体禁带展宽方法

Keywords: 全息,光子晶体,复周期结构,宽禁带

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Abstract:

讨论了二维复周期全息光子晶体禁带展宽的方法,二维复周期全息光子晶体可以使禁带成倍展宽.此外发现二维全息光子晶体中,除原来预期的禁带外,还出现了附加的禁带.当记录光波的入射角小于某个临界值,并且满足一定数值时,附加的禁带会使二维禁带进一步展宽;而当入射角超过临界值时,禁带会消失,这时禁带反而会变窄.这一现象对制作二维宽带隙光子晶体具有指导意义.

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