Tunable topological charge vortex microlaser

The orbital angular momentum (OAM) intrinsically carried by vortex light beams holds a promise for multidimensional high-capacity data multiplexing, meeting the ever-increasing demands for information. Development of a dynamically tunable OAM light source is a critical step in the realization of OAM...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2020-05, Vol.368 (6492), p.760-763
Main Authors: Zhang, Zhifeng, Qiao, Xingdu, Midya, Bikashkali, Liu, Kevin, Sun, Jingbo, Wu, Tianwei, Liu, Wenjing, Agarwal, Ritesh, Jornet, Josep Miquel, Longhi, Stefano, Litchinitser, Natalia M, Feng, Liang
Format: Article
Language:English
Subjects:
Angular momentum
Broken symmetry
Channel capacity
Emissions control
Information processing
Light
Light beams
Light emission
Light sources
Optical properties
Room temperature
Spin-orbit interactions
Topology
Vortices
Wavelength
Wavelength division multiplexing
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Summary:The orbital angular momentum (OAM) intrinsically carried by vortex light beams holds a promise for multidimensional high-capacity data multiplexing, meeting the ever-increasing demands for information. Development of a dynamically tunable OAM light source is a critical step in the realization of OAM modulation and multiplexing. By harnessing the properties of total momentum conservation, spin-orbit interaction, and optical non-Hermitian symmetry breaking, we demonstrate an OAM-tunable vortex microlaser, providing chiral light states of variable topological charges at a single telecommunication wavelength. The scheme of the non-Hermitian-controlled chiral light emission at room temperature can be further scaled up for simultaneous multivortex emissions in a flexible manner. Our work provides a route for the development of the next generation of multidimensional OAM-spin-wavelength division multiplexing technology.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aba8996