期刊
APPLIED PHYSICS LETTERS
卷 114, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5083084
关键词
-
资金
- National Science Foundation [ECCS 15-09845]
Coherently coupled laser arrays can be described by the temporal coupled mode theory in which the array modal behavior can be classified according to the coupling matrix, (sic). Accounting for a nonuniform gain/loss distribution in a laser array makes (sic) a non-Hermitian matrix, and experimentally we find phase-front tuning (beam steering) of the coherent supermode as a result of the non-Hermiticity. We report the experimental characterization of the supermodes in coherently coupled vertical cavity surface emitting laser diode arrays and demonstrate control of non-Hermiticity by spatially varying injection currents. Exceptional points are identified in these electrically injected microcavity diode arrays. Published under license by AIP Publishing.
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