Two-dimensional photonic-bandgap structures operating at near infrared wavelengths
Two-dimensional photonic-bandgap structures operating at near infrared wavelengths
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DOI：
10.1038/383699a0
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发表时间：
1996-10-24
期刊：
影响因子：
64.8
通讯作者：
Brand, S
中科院分区：
文献类型：
--
作者：
Krauss, TF;DeLaRue, RM;Brand, S
光子晶体是具有周期性介电结构的人造结构，其设计用于以与半导体的晶体结构影响电子的性质大致相同的方式影响光子的行为（1）。特别是，光子晶体禁止具有一定能量范围（称为光子带隙）的光子的传播，这是一种可以纳入新型光电器件设计中的特性（2）。随着在微波频率下具有完全光子带隙的材料的展示（3），在工作波长短至1.5 μ m的三维光子晶体的制造方面已经取得了相当大的进展（参考文献4），尽管这种结构的光学特性仍然远未达到理想（5）。在这里，我们表明，通过限制光子晶体的几何形状为两个维度（在波导配置），结构与偏振敏感的光子带隙在更低的波长（在800-900 nm的范围内）可以很容易地制造。我们的方法应该允许直接集成的光子带隙结构与其他光学和光电器件。
PHOTONIC crystals are artificial structures having a periodic dielectric structure designed to influence the behaviour of photons in much the same way that the crystal structure of a semiconductor affects the properties of electrons(1). In particular, photonic crystals forbid propagation of photons having a certain range of energies (known as a photonic bandgap), a property that could be incorporated in the design of novel optoelectronic devices(2). Following the demonstration of a material with a full photonic bandgap at microwave frequencies(3), there has been considerable progress in the fabrication of three-dimensional photonic crystals with operational wavelengths as short as 1.5 mu m (ref. 4), although the optical properties of such structures are still far from ideal(5). Here we show that, by restricting the geometry of the photonic crystal to two dimensions (in a waveguide configuration), structures with polarization-sensitive photonic bandgaps at still lower wavelengths (in the range 800-900 nm) can be readily fabricated. Our approach should permit the straightforward integration of photonic-bandgap structures with other optical and optoelectronic devices.