红外与毫米波学报, 2015, 34 (4): 0406, 网络出版: 2015-10-22
一种宽角度极化不敏感的高可调谐红外超材料完美吸波体
A wide-angle and polarization insensitive highly-tunable infrared metamaterial perfect absorber
摘要
提出了一种高度可调、宽角度且具有完美吸收和极化不敏感的超材料吸波体.模拟的结果显示, 在5.8μm处可达到最高吸收率99.9%；通过改变其几何参数, 吸波体的谐振波长在3.4μm到8.6μm的范围内可任意地调节, 且都具有不低于95%的峰值吸收率.在横磁波下, 当入射角度小于80°时, 吸波体的吸收率保持在95%以上；在横电波下, 当入射角小于60°时, 吸收率保持在92%以上.此外, 极化角度在0到90°变化时, 吸波体具有极化不敏感性.
Abstract
A highly-tunable wide-angle metamaterial absorber with perfect absorption and polarization-insensitivity was introduced and investigated. Simulative results show the maximum absorption reaches up to 99.9% at 5.8 μm and the absorber can be tuned arbitrarily in the range of 3.4 μm to 8.6 μm with the absorption remaining above 95% by changing its geometric parameters. The absorber remains absorptivity of over 95% with incident angles below 80° under transverse magnetic(TM) polarization and that of over 92% below 60° under transverse electric(TE) polarization. Furthermore, the absorber is polarization insensitive with polarization angle varying from 0° to 90°.
侯剑章, 顾德恩, 王涛, 文岐业, 蒋亚东. 一种宽角度极化不敏感的高可调谐红外超材料完美吸波体[J]. 红外与毫米波学报, 2015, 34(4): 0406. HOU Jian-Zhang, GU De-En, WANG Tao, WEN Qi-Ye, JIANG Ya-Dong. A wide-angle and polarization insensitive highly-tunable infrared metamaterial perfect absorber[J]. Journal of Infrared and Millimeter Waves, 2015, 34(4): 0406.
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