无衍射布洛赫表面波。
Diffraction-Free Bloch Surface Waves.
机构信息
Department of Optics and Optical Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China.
School of Engineering, RMIT University , Melbourne VIC 3001, Australia.
出版信息
ACS Nano. 2017 Jun 27;11(6):5383-5390. doi: 10.1021/acsnano.7b02358. Epub 2017 May 17.
Here, we demonstrate a diffraction-free Bloch surface wave sustained on all-dielectric multilayers that does not diffract after being passed through three obstacles or across a single mode fiber. It can propagate in a straight line for distances longer than 110 μm at a wavelength of 633 nm and could be applied as an in-plane optical virtual probe both in air and in an aqueous environment. Its ability to be used in water, its long diffraction-free distance, and its tolerance to multiple obstacles make this wave ideal for certain applications in areas such as the biological sciences, where many measurements are made on glass surfaces or for which an aqueous environment is required, and for high-speed interconnections between chips, where low loss is necessary.
在这里，我们展示了一种无衍射布洛赫表面波，它可以在全介质多层膜上维持，在穿过三个障碍物或穿过单模光纤后不会发生衍射。在 633nm 波长下，它可以在空气中和水环境中以直线传播超过 110μm 的距离，并且可以用作平面内光学虚拟探头。它在水中的应用能力、无衍射的长距离以及对多个障碍物的容忍度使其成为生物科学等领域某些应用的理想选择，在这些应用中，许多测量是在玻璃表面上进行的，或者需要水环境，并且对于芯片之间的高速互连，低损耗是必要的。
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