# Stanford and SLAC report strong ultrafast radiation signals in semiconductors

_Friday, September 4, 2026 at 12:40 PM EDT · Science, Infrastructure · Latest · Tier 2 — Notable_

![Stanford and SLAC report strong ultrafast radiation signals in semiconductors — Primary](https://scx2.b-cdn.net/gfx/news/2026/ultrafast-electrons-an.jpg)

Stanford University researchers working with SLAC National Accelerator Laboratory reported a strong ultrafast optical signal in common II-VI semiconductors after ionization in research published in Nature Photonics.

Using high-energy electrons and synchronized laser probes, the team found electron-hole pairs clustered in dense pockets rather than distributing evenly. Those pockets shifted the materials' band gaps and changed light transmission. The researchers said the findings could inform advanced radiation-sensing platforms, including imaging systems.

The work was conducted with SLAC's MeV-UED instrument and remains a laboratory result rather than a deployed detector.

## Sources

- [Phys.org](https://phys.org/news/2026-09-ultrafast-electrons-lasers-reveal-unexpectedly.html)

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