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bound states in the continuum in a t-shape nanohole array perforated in a photonic crystal slab
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نویسنده
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xie suxia ,xie song ,zhan jie ,xie changzhong ,tian guang ,li zhijian ,liu qiong
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منبع
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plasmonics - 2020 - دوره : 15 - شماره : 5 - صفحه:1261 -1271
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چکیده
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We have studied the reflectance spectra of t-shape nanohole array in a layer of photonic crystal (phc) slab. results show that light can be confined perfectly in the phc slab at a given incident angle at a suitable hole shape, hole size, layer thickness, and refractive index of surrounding medium. we obtained that the q-factor at bic can exceed 105, and the wavelength, incident angle of bic can be modulated by structure parameters and surrounding mediums dielectric factor. especially, the bic has high sensitivity to the refractive index of the surrounding medium. the results can be helpful in the design of new-type photonics devices, such as filters and sensors.
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کلیدواژه
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photonic crystal ,nanohole array ,bound states in the continuum ,q-factor ,refractive index
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آدرس
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hunan university of science and technology, school of physics and electronic science, china. university of shanghai for science and technology, school of mechanical engineering, china. university of wisconsin, department of electrical and computer engineering, usa, hunan university of science and technology, school of physics and electronic science, china, hunan university of science and technology, school of physics and electronic science, china, hunan university of science and technology, school of physics and electronic science, china, hunan university of science and technology, school of physics and electronic science, china, hunan university of science and technology, school of physics and electronic science, china. university of wisconsin, department of electrical and computer engineering, usa. hunan university, college of electrical and information engineering, china, hunan university of science and technology, school of physics and electronic science, china
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Authors
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