Journal
SCIENCE
Volume 353, Issue 6298, Pages 464-467Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaf8533
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Funding
- U.S. Army Research Office Award [W911NF-15-1-0152]
- Department of Energy Award [DE-SC0014485]
- National Science Foundation Award [DMR-1506884]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1506884] Funding Source: National Science Foundation
- U.S. Department of Energy (DOE) [DE-SC0014485] Funding Source: U.S. Department of Energy (DOE)
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Structured light provides an additional degree of freedom for modern optics and practical applications. The effective generation of orbital angular momentum ( OAM) lasing, especially at a micro- and nanoscale, could address the growing demand for information capacity. By exploiting the emerging non-Hermitian photonics design at an exceptional point, we demonstrate a microring laser producing a single-mode OAM vortex lasing with the ability to precisely define the topological charge of the OAM mode. The polarization associated with OAM lasing can be further manipulated on demand, creating a radially polarized vortex emission. Our OAM microlaser could find applications in the next generation of integrated optoelectronic devices for optical communications in both quantum and classical regimes.
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