Experimental observation of optical Weyl points

We present the experimental observation of type-II optical Weyl points and corresponding Fermi arcs in a three-dimensional photonic structure. We employ a system composed of an array of staggered helical waveguides fabricated using the direct laser writing technique. Weyl points are established by o...

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Published in2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) p. 1
Main Authors Noh, J., Huang, S., Leykam, D., Chong, Y. D., Chen, K., Rechtsman, M. C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2017
Subjects
Diffraction
Optical device fabrication
Optical diffraction
Optical surface waves
Optical waveguides
Photonics
Surface states
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Summary:We present the experimental observation of type-II optical Weyl points and corresponding Fermi arcs in a three-dimensional photonic structure. We employ a system composed of an array of staggered helical waveguides fabricated using the direct laser writing technique. Weyl points are established by observing conical diffraction and Fermi arcs are demonstrated by showing surface confinement (and deconfinement) at wavelengths above (below) the Weyl point.
DOI:10.1109/CLEOE-EQEC.2017.8087803