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a facile strategy for all-optical controlling platform by using plasmonic perfect absorbers
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نویسنده
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liu zhengqi ,fu guolan ,yang yan-xing ,pan pingping ,huang zhenping ,chen jian
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منبع
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plasmonics - 2018 - دوره : 13 - شماره : 3 - صفحه:797 -801
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چکیده
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Dual-band light absorption with the maximal absorptivity up to 99.7% and the minimal spectral bandwidth down to 3 nm is obtained in the plasmonic absorbers consisting of triple-layer plasmonic crystal-nonlinear medium cavity-metal substrate structure, where the intercalated dielectric material is chosen to be a kerr medium cavity. efficient all-optical controlling with high spectral intensity change ratios and detecting signal-to-noise is achieved for the system after a slight increase of pumping intensity. these impressive results mainly result from the strong plasmonic resonant field confinement in the middle nonlinear kerr medium cavity and the near-perfect relative intensity change response by the ultra-sharp anti-reflection spectrum. this work can lay a foundation for advanced all-optical devices by exploiting light perfect absorption behavior and resonant optical field enhancement.
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کلیدواژه
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metal-dielectric-metal (mdm) ,perfect absorption ,kerr medium ,all-optical controlling
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آدرس
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jiangxi normal university, college of physics and communication electronics, jiangxi key laboratory of nanomaterials and sensors, jiangxi key laboratory of photoelectronics and telecommunication, china, jiangxi normal university, college of physics and communication electronics, jiangxi key laboratory of nanomaterials and sensors, jiangxi key laboratory of photoelectronics and telecommunication, china, jiangxi normal university, college of physics and communication electronics, jiangxi key laboratory of nanomaterials and sensors, jiangxi key laboratory of photoelectronics and telecommunication, china, jiangxi normal university, college of physics and communication electronics, jiangxi key laboratory of nanomaterials and sensors, jiangxi key laboratory of photoelectronics and telecommunication, china, jiangxi normal university, college of physics and communication electronics, jiangxi key laboratory of nanomaterials and sensors, jiangxi key laboratory of photoelectronics and telecommunication, china, jiangxi normal university, college of physics and communication electronics, jiangxi key laboratory of nanomaterials and sensors, jiangxi key laboratory of photoelectronics and telecommunication, china
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Authors
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