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arXiv 1506.06282physics.optics
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等离子体激元注入补偿和控制负折射率材料中的损耗

Plasmon Injection to Compensate and Control Losses in Negative Index Metamaterials

Mehdi Sadatgol, Şahin K. Özdemir, Lan Yang, Durdu Ö. Güney

摘要:

超材料引入了一个全新的不寻常材料世界,其功能无法通过在亚波长尺度上模仿和控制自然现象而在自然发生的材料系统中获得。然而,固有的吸收损耗对超材料最吸引人的应用提出了根本性的挑战。基于一种新的等离子体激元注入方案,我们提出了一种补偿超材料损耗的相干光放大技术。虽然这里的概念验证设备仅在法向入射下工作,但我们提出的方案可以推广到任意形式的入射波。这种光放大方案与主要的光放大方案有根本的不同。它不需要增益介质,与声子的相互作用,或任何非线性介质。该方案允许无损耗的超材料。它非常适合减轻在可见光谱中工作的超材料的损耗,并且可扩展到其他光学频率。这些发现开启了从零开始制造“神奇”超材料的早期梦想的可能性。

英文摘要:

Metamaterials have introduced a whole new world of unusual materials with functionalities that cannot be attained in naturally occurring material systems by mimicking and controlling the natural phenomena at subwavelength scales. However, the inherent absorption losses pose fundamental challenge to the most fascinating applications of metamaterials. Based on a novel plasmon injection (PI or Π) scheme, we propose a coherent optical amplification technique to compensate losses in metamaterials. Although the proof of concept device here operates under normal incidence only, our proposed scheme can be generalized to arbitrary form of incident waves. The Π-scheme is fundamentally different than major optical amplification schemes. It does not require gain medium, interaction with phonons, or any nonlinear medium. The Π-scheme allows for loss-free metamaterials. It is ideally suited for mitigating losses in metamaterials operating in the visible spectrum and is scalable to other optical frequencies. These findings open the possibility of reviving the early dreams of making 'magical' metamaterials from scratch.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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