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arXiv 2008.04498physics.optics
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光栅诱导高质量光学Tamm态的临界耦合涡旋

Critical coupling vortex with grating-induced high quality optical Tamm states

Rashid G. Bikbaev, Dmitrii N. Maksimov, Pavel S. Pankin, Kuo-Ping Chen, Ivan V. Timofeev

摘要:

我们研究光学Tamm的支持下放置在分布式布拉格反射器顶部的介质光栅的状态。结果表明,在一定条件下,Tamm态可以成为连续介质中的束缚态。束缚态,反过来,诱导临界耦合的反射振幅达到精确的零的效果。我们证明了临界耦合点位于在波长和入射角的空间中的反射振幅梯度的涡旋的核心。用耦合模理论解释了涡旋的产生。

英文摘要:

We investigate optical Tamm states supported by a dielectric grating placed on top of a distributed Bragg reflector. It is found that under certain conditions the Tamm state may become a bound state in the continuum. The bound state, in its turn, induces the effect of critical coupling with reflectance amplitude reaching an exact zero. We demonstrate that the critical coupling point is located in the core of a vortex of the reflection amplitude gradient in space of wavelength and angle of incidence. The emergence of the vortex is explained by the coupled mode theory.

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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