ANOMALOUS INDEX OF REFRACTION IN PHOTONIC BANDGAP MATERIALS
ANOMALOUS INDEX OF REFRACTION IN PHOTONIC BANDGAP MATERIALS
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DOI：
10.1080/09500349414550371
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发表时间：
1994-02-01
影响因子：
1.3
通讯作者：
BOWDEN, CM
中科院分区：
文献类型：
--
作者：
DOWLING, JP;BOWDEN, CM
在光子带隙材料中的差距附近，有效折射率可以变得小于1，并且实际上可以在带边缘本身处接近零，从而导致超折射光学效应。我们在一个简单的一维Kronig-Penney模型的三维带隙结构中定量地说明了这种效果。作为涉及无反转激光的折射率增强方案的补充，具有光子带材料的超折射光学器件具有许多应用，包括激光加速器和超短焦距透镜。
Near the gap in a photonic bandgap material the effective index of ;refraction can become less than unity and in fact can approach zero at the band edge itself-leading to ultra-refractive optical effects. We illustrate this effect quantitatively in a simple one-dimensional Kronig-Penney model of a three-dimensional bandgap structure. As a complement to index-enhancing schemes involving lasing without inversion, ultra-refractive optics with photonic band materials has many applications, including laser accelerators and lenses of ultra-short focal lengths.