Photonic-crystal slab for terahertz-wave technology platform

Masayuki Fujita

doi:10.1117/12.2218065

15 March 2016 Photonic-crystal slab for terahertz-wave technology platform

Masayuki Fujita

Proceedings Volume 9757, High Contrast Metastructures V; 97570W (2016) https://doi.org/10.1117/12.2218065
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

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.

Citation Download Citation

Masayuki Fujita "Photonic-crystal slab for terahertz-wave technology platform", Proc. SPIE 9757, High Contrast Metastructures V, 97570W (15 March 2016); https://doi.org/10.1117/12.2218065

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