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首页> 外文会议>Transparent Optical Networks, 2003. Proceedings of 2003 5th International Conference on >Diffraction effects in macroporous silicon with through pores
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Diffraction effects in macroporous silicon with through pores

机译：具有通孔的大孔硅中的衍射效应

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The macroporous silicon (ma-Si) is a type of a porous Si where vertical pores form a two-dimensional (2D) periodic structure on the surface, and the pore depth is on orders of magnitude larger than the inter-pore distance and pore diameter. The combination of a high-quality 2D periodic structure with a high refractive index contrast in ma-Si opens the way to its application as a 2D photonic crystal. A photonic band gap appears if light propagates in a direction perpendicular to pore axis. The spectral position and width of the gap are defined by the structure symmetry, inter-pore distance, and pore radius. For the light propagating parallel to the pore axis, ma-Si can be used as a shortpass filter, transparent in the short-wavelength range and blocking the long-wavelength radiation. In ma-Si filters, light propagates in air in pores surrounded by silicon, absorbing visible light. The pore dimensions, i.e., their diameter and length, define the filter transmission spectrum. As far as we know by now, only one study devoted to ma-Si transmission in the visible range exists. The present study is devoted to further experimental and theoretical investigation of the ma-Si transmission in the visible range for the light propagating parallel to pore axis.
机译：大孔硅（ma-Si）是一种多孔硅，其中垂直孔在表面上形成二维（2D）周期性结构，并且孔深比孔间距离和孔大几个数量级直径。在ma-Si中高质量2D周期性结构与高折射率对比度的结合为它作为2D光子晶体的应用开辟了道路。如果光沿垂直于孔轴的方向传播，则会出现光子带隙。间隙的光谱位置和宽度由结构对称性，孔间距离和孔半径定义。对于平行于孔轴传播的光，可以将ma-Si用作短通滤光片，在短波长范围内透明并阻挡长波长辐射。在ma-Si滤光片中，光在空气中在被硅包围的孔中传播，从而吸收可见光。孔的尺寸，即它们的直径和长度，定义了滤光器的透射光谱。据我们目前所知，只有一项研究致力于可见光范围内的ma-Si传输。本研究致力于对平行于孔轴传播的光在可见光范围内的ma-Si传输进行进一步的实验和理论研究。

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