Journal
SCIENCE
Volume 367, Issue 6481, Pages 1018-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aba4597
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Funding
- National Key Research and Development Program of China [SQ2018YFB220027]
- Shenzhen Fundamental Research Fund [JCYJ20180507184613841]
- Australian Research Council [DP200101168]
- National Science Foundation [PHY-1847240]
- Shenzhen Engineering Laboratory on Organic-Inorganic Perovskite Devices
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The development of classical and quantum information-processing technology calls for on-chip integrated sources of structured light. Although integrated vortex microlasers have been previously demonstrated, they remain static and possess relatively high lasing thresholds, making them unsuitable for high-speed optical communication and computing. We introduce perovskite-based vortex microlasers and demonstrate their application to ultrafast all-optical switching at room temperature. By exploiting both mode symmetry and far-field properties, we reveal that the vortex beam lasing can be switched to linearly polarized beam lasing, or vice versa, with switching times of 1 to 1.5 picoseconds and energy consumption that is orders of magnitude lower than in previously demonstrated all-optical switching. Our results provide an approach that breaks the long-standing trade-off between low energy consumption and high-speed nanophotonics, introducing vortex microlasers that are switchable at terahertz frequencies.
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