![]() The optical vector vortex is particularly useful for generating different degrees of freedom for spatially distinguishable channels in data transmission 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11. Demonstration of vortex nanolasers using our facile design procedure will pave the way towards next-generation optical communication systems.Ĭontrol of the angular momentum of light has attracted a great deal of attention in photonics. In the experiment, the optical vortices of the lasing modes are clearly identified by measuring polarization-resolved images, Stokes parameters and self-interference patterns. ![]() Unique resonant modes are strongly confined in these cavities, which exhibit wavelength-scale mode volumes and retain topological charges in the disclination geometries. Various photonic disclination cavities are designed and analysed using the similarities between tight-binding models and optical simulations. Here we demonstrate wavelength-scale, low-threshold, vortex and anti-vortex nanolasers in a C 5 symmetric optical cavity formed by a topological disclination. Although several coherent light sources carrying a topological singularity have been reported, it remains challenging to develop a general strategy for designing ultra-small, high-quality photonic nanocavities that generate and support optical vortex modes. ![]() Optical vector vortex beams provide additional degrees of freedom for spatially distinguishable channels in data transmission. ![]()
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