Journal
NATURE PHOTONICS
Volume 13, Issue 4, Pages 283-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41566-019-0380-z
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Funding
- ERC
- H2020-FETFLAG project PhoQus [820392]
- QUANTERA project Interpol [ANR-QUAN-0003-05]
- French National Research Agency (ANR) [ANR-16-CE30-0021, ANR-11-LABX-0007, ANR-10-LABX-0035, 16-IDEX-0001 (CAP 20-25)]
- French RENATECH network
- CPER Photonics for Society P4S
- Metropole Europeenne de Lille via the project TFlight
- Marie Curie individual fellowship ToPol
- Natural Sciences and Engineering Research Council of Canada
- IUF (Institut Universitaire de France)
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Orbital angular momentum (OAM) carried by helical light beams is an unbounded degree of freedom that offers a promising platform in modern photonics. So far, integrated sources of coherent light carrying OAM are based on resonators whose design imposes a single, non-tailorable chirality of the wavefront (that is, clockwise or counterclockwise vortices). Here we propose and demonstrate the realization of an integrated microlaser where the chirality of the wavefront can be optically controlled. Importantly, the scheme that we use, based on the optical breaking of time-reversal symmetry in a semiconductor microcavity, can be extended to different laser architectures, thus paving the way to the realization of a new generation of OAM microlasers with tunable chirality.
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