arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.09249physics.opticsphysics.app-phphysics.ins-det
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基于表面等离子体激元直接耦合的红外偏振器

Infrared polarizer based on direct coupling to surface-plasmon polaritons

A. Shahsafi, J. Salman, B. E. Rubio Perez, Y. Xiao, C. Wan, M. A. Kats

摘要:

我们提出了一种新型的反射偏振器的基础上偏振依赖耦合到表面等离子体激元(SPP)从自由空间。这种便宜的偏振器相对窄带,但具有高达1000的消光比,对于所需的偏振(计算得出的数字)效率高达95%,因此可以堆叠以实现106或更高的消光比。作为概念的证明,我们通过实验实现了基于纳米多孔氧化铝的偏振器,该偏振器在10.6 μ m的波长附近工作,对应于CO2激光器的输出,使用铝阳极氧化,一种低成本的电化学工艺。

英文摘要:

We propose a new type of reflective polarizer based on polarization-dependent coupling to surface-plasmon polaritons (SPPs) from free space. This inexpensive polarizer is relatively narrowband but features an extinction ratio of up to 1000 with efficiency of up to 95% for the desired polarization (numbers from a calculation), and thus can be stacked to achieve extinction ratios of 106 or more. As a proof of concept, we experimentally realized a polarizer based on nanoporous aluminum oxide that operates around a wavelength of 10.6 um, corresponding to the output of a CO2 laser, using aluminum anodization, a low-cost electrochemical process.

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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