Photonic-crystal slab for terahertz-wave technology platform
Photonic-crystal slab for terahertz-wave technology platform
复制标题
太赫兹波技术平台光子晶体板
DOI：
10.1117/12.2218065
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Fujita
中科院分区：
文献类型：
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作者：
T. Nagatsuma S. Hisatake;M. Fujita;H. H. N. Pham;K. Tsuruda;S. Kuwano;and J. Terada;古木崇裕，太田雅，石井佑弥，福田光男;松村智矢, 大島大輝, 加藤剛志, 岩田聡;染谷隆夫;土屋敏章;M. Fujita
光子晶体以类似于固态晶体的方式操纵光子，并且由具有周期性折射率分布的介电材料组成。特别是，具有高折射率对比度（半导体/空气）的二维光子晶体板在实际应用中是有希望的，这是由于在简单的薄平面结构中的强光学限制。本文介绍了硅光子晶体板作为太赫兹波技术平台的最新进展，太赫兹波位于无线电和光波区域之间（0.1-10 THz）。基于光子带隙效应的极低损耗（<0.1dB/cm）太赫兹光波导，以及通过光子晶体中光激发载流子与光子带边效应引起的太赫兹波俘获之间的有效相互作用对太赫兹波在光子晶体中传输的动态控制和调制。太赫兹光子晶体板具有开发用于无线通信、光谱传感和成像等应用的超低损耗、紧凑型太赫兹元件和集成器件的潜力。
Photonic crystals manipulate photons in a manner analogous to solid-state crystals, and are composed of a dielectric material with a periodic refractive index distribution. In particular, two-dimensional photonic-crystal slabs with high index contrasts (semiconductor/air) are promising for practical applications, owing to the strong optical confinement in simple, thin planar structures. This paper presents the recent progress on a silicon photonic-crystal slab as a technology platform in the terahertz-wave region, which is located between the radio and light wave regions (0.1–10 THz). Extremely low-loss (<0.1 dB/cm) terahertz waveguides based on the photonic-bandgap effect as well as dynamic control and modulation of a terahertz-wave transmission in a photonic-crystal slab by the effective interaction between photoexcited carriers and the terahertz-wave trapping due to the photonic band-edge effect are demonstrated. Terahertz photonic-crystal slabs hold the potential for developing ultralow-loss, compact terahertz components and integrated devices used in applications including wireless communication, spectroscopic sensing, and imaging.