Novel Dirac-vortex topological lasers monolithically grown on silicon. (IMAGE)
Caption
a, Conceptual illustration of a Dirac-vortex topological laser epitaxially grown on a silicon substrate. The photonic crystal structure was defined in the active layer and suspended by partially removing the sacrificial layer. b, Tilted-view scanning electron microscope image of the fabricated topological Dirac-vortex photonic crystal cavity. Scale bar, 500 nm. c, Cross-sectional bright-field transmission electron microscope image of the active layer containing four-stack InAs/InGaAs QD layers.
Credit
by Jingwen Ma, Taojie Zhou, Mingchu Tang, Haochuan Li, Zhan Zhang, Xiang Xi, Mickael Martin, Thierry Baron, Huiyun Liu, Zhaoyu Zhang, Siming Chen and Xiankai Sun
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Credit must be given to the creator.
License
CC BY