Observation of Quadratic (Charge‐2) Weyl Point Splitting in Near‐Infrared Photonic Crystals (Laser Photonics Rev. 16(1)/2022). Issue 1 (7th January 2022)

• Record Type: Journal Article
• Authors: Jörg, Christina; Vaidya, Sachin; Noh, Jiho; Cerjan, Alexander; Augustine, Shyam; von Freymann, Georg; Rechtsman, Mikael C.
• Is Part Of: Laser & photonics reviews. Volume 16:Issue 1(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-01-07
• Subjects: Lasers -- Periodicals; Photonics -- Periodicals; Lasers -- Périodiques; Photonique -- Périodiques; 621.36
• DOI: 10.1002/lpor.202270002
• Languages: English
• ISSNs: 1863-8880

Abstract

Abstract : Weyl Points Weyl points are topological degeneracies in the band structure of periodic media that are robust against perturbations due to their integer topological charge. In article number 2100452, Christina Jörg and co‐workers experimentally demonstrate splitting of a quadratic Weyl point of charge‐2 into two linear Weyl points with charge‐1 in 3D micro‐printed photonic crystals and measure their angle‐resolved spectrum in the near‐infrared via Fourier‐transform infrared spectroscopy.