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ARTICLE SUMMARY / 2025

Frequency-modulated high-power photonic-crystal surface-emitting lasers for long-distance coherent free-space optical communications

Takuya Inoue, Ryohei Morita, Shota Ishimura … Susumu Noda (10 authors)

Nature Photonics · 19, 1330–1335 · online 14 October

Summary

Can a compact PCSEL supply high-power coherent modulation?

Uses two photonic-crystal sections with slightly different resonances and anti-phase current injection.

Demonstrates watt-class frequency modulation and Gbps-class free-space communication without a fibre amplifier.

Commentary

The attenuation experiment is not a demonstration of an operational intersatellite link.

Shows band-edge engineering and active electrical control serving a system-level optical objective.

Interpretation and connections in this note, separate from the authors’ reported findings.

Related modelling approaches

Relation labels come from the method guide and are editorial. Unlabelled links are conceptual connections or comparison methods; the paper does not necessarily implement them.

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2025 / Experiment

Modeling Self-Heating in High-Power Single-Mode Phase-Coupled Linear VCSEL Arrays

V. Torrelli, M. C. G. Alasio, M. D’Alessandro … P. Debernardi (9 authors)

Models heat sources and the connection between temperature, thermal lensing and optical modes.

Summary & commentary : Modeling Self-Heating in High-Power Single-Mode Phase-Coupled Linear VCSEL Arrays