二十面体准晶的光干涉全息研究
Icosahedral quasicrystals by optical interference holography
摘要:
光学干涉全息术是制作周期性光子晶体的一种有效方法,在光子晶体中,电磁波在特定的频率带隙内是被禁止的。与周期晶体相比,具有更高点群对称性的准晶更有利于实现完全带隙。在这份报告中,我们提出了两个七光束光学干涉配置的基础上的倒易矢量空间表示的准晶制造二十面体准晶。对准晶的干涉模拟显示出二十面体的完全对称性。这一结果为利用全息光刻技术制备光子准晶体奠定了基础。
英文摘要:
Optical interference holography has been proved to be a useful technique in fabricating periodic photonic crystals in which electromagnetic waves are forbidden in certain frequency bandgaps. Compared to periodic crystals quasicrystals, having higher point group symmetry, are more favourable in achieving complete bandgaps. In this report, we propose two seven-beam optical interference configurations based on the reciprocal vector space representations for quasicrystals to fabricate icosahedral quasicrystals. Interference simulations for the quasicrystals exhibit the full symmetry of an icosahedron. The result paves the path for the fabrication of photonic quasicrystals using holographic lithography.
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