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PreprintarXiv licencearXiv

Frequency Attraction and Repulsion in Lasers with Complex Mutual Coupling

  • Amit Pando
  • Tomer Hacohen
  • Eran Bernstein
  • Victor Shelukin
  • Asher Friesem
  • Nir Davidson
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Abstract

We experimentally investigate laser synchronization under complex mutual coupling, featuring both dissipative and dispersive components. Using a reconfigurable digital degenerate cavity laser with precise control over system parameters, we show that complex coupling can induce both frequency attraction and repulsion, in contrast to common models of coupled oscillators. Furthermore, we show that these frequency shifts can be exploited to significantly enhance global synchronization in multi-laser arrays. Comparison with numerical and theoretical results indicate that amplitude dynamics of complex coupled lasers play an important role in the observed phenomena. Our results establish a versatile platform for exploring non-Hermitian physics and topological states in tailored laser networks.

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Cite

BibTeXRIS
BibTeX
@misc{pando2026frequency,
  title = {{Frequency Attraction and Repulsion in Lasers with Complex Mutual Coupling}},
  author = {Amit Pando and Tomer Hacohen and Eran Bernstein and Victor Shelukin and Asher Friesem and Nir Davidson},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2609.20132},
  eprint = {2609.20132},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.20132},
}
RIS
TY  - UNPB
TI  - Frequency Attraction and Repulsion in Lasers with Complex Mutual Coupling
AU  - Amit Pando
AU  - Tomer Hacohen
AU  - Eran Bernstein
AU  - Victor Shelukin
AU  - Asher Friesem
AU  - Nir Davidson
PY  - 2026
DA  - 2026/10/21
PB  - arXiv
DO  - 10.48550/arxiv.2609.20132
UR  - https://arxiv.org/abs/2609.20132
AB  - We experimentally investigate laser synchronization under complex mutual coupling, featuring both dissipative and dispersive components. Using a reconfigurable digital degenerate cavity laser with precise control over system parameters, we show that complex coupling can induce both frequency attraction and repulsion, in contrast to common models of coupled oscillators. Furthermore, we show that these frequency shifts can be exploited to significantly enhance global synchronization in multi-laser arrays. Comparison with numerical and theoretical results indicate that amplitude dynamics of complex coupled lasers play an important role in the observed phenomena. Our results establish a versatile platform for exploring non-Hermitian physics and topological states in tailored laser networks.
ER  -