Photonic Band Gap Properties of Three-Dimensional SiO2 Photonic Crystals |
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| Authors: | LIU Yan-Ping YAN Zhi-Jun LI Zhi-Gang LI Qin-Tao WANG Yin-Yue |
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| Affiliation: | School of Physics and Electronic Engineering, Taizhou University, Taizhou 318000 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000 |
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| Abstract: | Three-dimensional SiO2 photonic crystals (PhCs) are fabricated on quartz substrates by the vertical deposition method. Scanning electron microscopy measurement reveals that the samples exhibit an ordered close-packed arrangement of SiO2 spheres. It is found that the position of the 111] photonic band gap (PBG) shifts to a long wavelength (red shift) with increasing sphere size. Gap broadening effects are observed due to the presence of defects in the samples. Moreover, the optical properties of the PBG are very sensitive to the annealing temperature. Our results indicate that the optical properties of the PBG can be easily tuned in the visible region by appropriate experimental parameters, which will be useful for practical applications of PhC optical devices. |
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| Keywords: | 42 70 Qs 61 46 Df 81 16 Dn |
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