Photonics Focus

Current Issue

This issue of Photonics Focus explores modern metrology, from the extraordinary precision of next-generation optical clocks, to the exquisitely sensitive mechanisms that allow scientists to detect gravitational waves originating from the collision of black holes. We look, too, at semiconductor lithography that has etch patterns so incredibly small fabricators must rely on advanced metrology instruments to find hidden defects.

Select articles are available online but the complete issue is downloadable as a PDF.

About Photonics Focus

Launched in 2020, Photonics Focus® is the award-winning society magazine of SPIE. Articles showcase scientific discovery and innovative real-world applications of optics and photonics.

A subscription to Photonics Focus is included in SPIE Membership, or you can purchase an annual print subscription (6 issues per year) without membership for $29.95:


Read more about how to subscribe or submit an article to the magazine.

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