Shape resonance omni-directional terahertz filters with near-unity transmittance
Shape resonance omni-directional terahertz filters with near-unity transmittance
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DOI：
10.1364/oe.14.001253
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发表时间：
2006-02-06
期刊：
影响因子：
3.8
通讯作者：
Planken, PCM
中科院分区：
文献类型：
--
作者：
Lee, JW;Seo, MA;Planken, PCM
利用飞秒激光加工技术在金属薄膜上打孔，制备了具有不同几何形状的太赫兹透射滤光片。正方形、圆形、矩形、C形和ε形孔的二维阵列都支持在由几何形状、对称性、偏振和晶格常数确定的特定频率下超过99%的透射。我们的研究结果表明，具有不同几何形状的孔的等离子体结构是非常通用的，可靠的，易于控制，易于制造太赫兹滤波器。(c)2006年美国光学学会。
Terahertz transmission filters have been manufactured by perforating metal films with various geometric shapes using femtosecond laser machining. Two dimensional arrays of square, circular, rectangular, c-shaped, and epsilon-shaped holes all support over 99% transmission at specific frequencies determined by geometric shape, symmetry, polarization, and lattice constant. Our results show that plasmonic structures with different geometric shaped holes are extremely versatile, dependable, easy to control and easy to make terahertz filters. (c) 2006 Optical Society of America.