Photonic crystal slow light waveguides in a kagome lattice
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Slow light photonic crystal waveguides tightly compress propagating light and increase interaction times, showing immense potential for all-optical delay and enhanced light–matter interactions. Yet, their practical application has largely been limited to moderate group index values (<100), due to a lack of waveguides that reliably demonstrate slower light. This limitation persists because nearly all such research has focused on a single photonic crystal lattice type: the triangular lattice. Here, we present waveguides based on the kagome lattice that demonstrate an intrinsically high group index and exhibit slow and stopped light. We experimentally demonstrate group index values of >150, limited by our measurement resolution. The kagome-lattice waveguides are an excellent starting point for further slow light engineering in photonic crystal waveguides.
Schulz , S A , Upham , J , O'Faolain , L & Boyd , R W 2017 , ' Photonic crystal slow light waveguides in a kagome lattice ' , Optics Letters , vol. 42 , no. 16 , pp. 3243-3246 . https://doi.org/10.1364/OL.42.003243
© 2017, Optical Society of America. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1364/OL.42.003243
DescriptionCanada Excellence Research Chairs, Government of Canada (CERC); H2020 European Research Council (ERC) (337508).
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