Realization of ultrawide omnidirectional photonic band gap in multiple one-dimensional photonic crystals

被引：0

作者：

Lee, Hyun-Yong ^{[1
]}

Nam, Gi-Yeon ^{[1
]}

机构：

[1] Center for Functional Nano Fine Chemicals, Faculty of Applied Chemical Engineering, Chonnam National University, 300 Yongbong Dong, Kwangju 500-757, Korea, Republic of

来源：

Journal of Applied Physics | 2006年 / 100卷 / 08期

关键词：

Theoretical and experimental investigations have shown that the omnidirectional photonic band gap (omni-PBG) of one-dimensional photonic crystals (1D PCs) can be enlarged by including multiple-periodic structures. These structures; consisting of Si-Si O2 alternating layers with multiple periods; 1; 2; M; have great potential for ultrawide omnireflectors operating in the infrared frequency range. To confirm the effect of multiple periods in the 1D PCs; we prepared two types of 16-pair; SiSi O2 1D PCs with a single period of 1 =426.9 nm and 2 =306.9 nm; and one type of 16-pair 1D PC with double periods-the combination of eight-pair 1 and eight-pair 2. Theoretically; the normalized frequency range for omni-PBG (Δω) in double PC is enhanced by approximately twice that in the single PC. That is; Δω increases from 0.086 to 0.166; which corresponds to the wavelength range (Δλ) from 520 to 980 nm for =407.7 nm. Measured reflectance (R) spectra are in a good agreement with the calculated results. For example; the R spectrum of SiSi O2 double 1D PC (8-pair 1 +8 -pair 2: 1 =426.9 nm; =306.9; nm; and filling factor =0.406) exhibits an ultrawide PBG over the wavelength range of 1050-2500 nm for TE polarization at the incident angle of 5°. © 2006 American Institute of Physics;

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摘要：

Journal article (JA)

引用

共 4 条

[1] Omni-directional mirror for visible light based on one-dimensional photonic crystal
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[2] A near infrared optical reflector using one-dimensional photonic crystal structure containing chalcogenide glasses
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[3] Compact triplexer in two-dimensional hexagonal lattice photonic crystals
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[4] One-dimensional Anisotropic Electronic States in Needle-shaped La5Ti2CuS5O7 Single Crystals Grown in Molten Salt in Bridgman Furnace
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CRYSTAL GROWTH & DESIGN, 2019, 19 (04) : 2419 - 2427

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