@inproceedings{c3c7670d68ef438b9399c2de8c1124e7,
title = "Spontaneously appearing polarization singularities in vertical-cavity lasers with feedback",
abstract = "Topological states of fluids of light in nonlinear optical devices are attracting a lot of attention. Interest shifts to {"}fully structured light{"} with complex intensity, phase and polarization structure [1] . Vector vortex beams (VVB) have singularities in their director field leading to a spatially inhomogeneous polarization structure. As the simultaneous presence of different polarization states demands a high isotropy of the optical setup, their spontaneous emergence is very uncommon but they have been predicted [2] and observed [3] in vertical-cavity surface-emitting lasers (VCSEL). In Ref. [3] it was concluded that many (potentially all) different VVB exist but their mutual stability is dictated by small residual anisotropies. In this contribution, we are investigating this by introducing a controlled anisotropy via a half-wave plate (HWP).",
keywords = "vertical-cavity surface-emitting lasers (VCSEL), vector vortex beams, VVB, half-wave plates, spin dynamics, lasers",
author = "Thorsten Ackemann and Thierry Guillet",
year = "2021",
month = sep,
day = "30",
doi = "10.1109/CLEO/Europe-EQEC52157.2021.9541680",
language = "English",
isbn = "9781665418768",
series = "IEEE Explore",
publisher = "IEEE",
booktitle = "2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)",
}