# A blue laser for underwater communication and sensing

- Source: Phys.org - latest science and technology news stories
- Published: 2026-10-29T18:40:08+00:00
- Category: Science
- Original: https://phys.org/news/2026-10-blue-laser-underwater-communication.html
- Canonical: https://groundlevelnews.com/story/a-blue-laser-for-underwater-communication-and-sensing-d0bad7/

Researchers at EPFL have developed a chip-scale blue laser that combines stable light emission with rapid frequency control, opening possibilities for underwater communication, environmental sensing and quantum technologies.

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