Orbital angular momentum microlaser

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-H...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2016-07, Vol.353 (6298), p.464-467
Main Authors: Miao, Pei, Zhang, Zhifeng, Sun, Jingbo, Walasik, Wiktor, Longhi, Stefano, Litchinitser, Natalia M., Feng, Liang
Format: Article
Language:English
Subjects:
Angular momentum
Degrees of freedom
Demand
Devices
Fluid flow
Lasers
Lasing
Light
Microlasers
Optics
Orbitals
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Summary: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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aaf8533