Researchers developed a chip-based laser that maintains a stable frequency without requiring active control.

What it means

Researchers at EPFL have developed a chip-scale laser that maintains a very stable output frequency across its operating range without needing any active electronic feedback or control. This is a significant step toward compact, low-power photonic systems—such as atomic clocks or sensors—that currently rely on bulky, power-hungry stabilization setups.

Accuracy & sourcesGrounded

The claim originates from the researchers' own published paper (the primary source), and the Phys.org article is a direct news report on that work. The underlying science is well-established in photonics, so the result is credible, though the exact performance numbers and long-term stability would need to be verified from the full paper.

How new

Genuinely new: the news broke on 2 October 2026, and the underlying research appears to be published concurrently.

Go deeper

• Phys.org — first to publish