Decay-free radiation in uniform grating couplers with exceptional points

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We report a grating coupler capable to efficiently project a constant-intensity free-space beam due to exceptional points in a photonic band diagram. Our device enables a new route to project arbitrarily wide free-space top-hat beams.
Publisher
Optica Publishing Group (formerly OSA)
Issue Date
2020-09
Language
English
Citation

2020 Frontiers in Optics Conference, FiO 2020

DOI
10.1364/FIO.2020.FTu6E.5
URI
http://hdl.handle.net/10203/300214
Appears in Collection
EE-Conference Papers(학술회의논문)
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