November 2025 Issue
Feature Articles
AI Factories: Photonics at Scale
The explosive growth of AI is driving a shift from copper to optics in data centers—and transforming photonic integrated circuit production.
by Meeri KimFELs and the Future of Lithography
Ultrabright, efficient free-electron lasers promise the power to increase throughput and extend lithography toward sub-nanometer scales.
by Dylan Black, Dinh Nguyen, Chris Anderson and Kevin HeidrichSilicon Nitride: From Workhorse to Superstar
The once-unassuming material has moved to the forefront of integrated photonics and quantum technology, thanks to a unique combination of properties.
by Mohammad Hossein Enjavi, Saeed Javadizadeh and Ali AdibiDepartments and Columns
Tailorable Materials for Dynamic Photonics
Alexandra Boltasseva spoke with OPN about how advances in materials science could enable new optical technologies.
Taking on Gender Disparity in Quantum
The new atom*innen platform serves as a resource and hub for women and gender minorities.
Also in this Issue
30, 20, and 10 Years Ago in OPN
Microchip lasers and laser arrays; polymer-dispersion technologies for flexible displays; air-quality monitoring in the mid-infrared
![Researcher Clara Saraceno in the lab. [Image by Carsten Behler Photography]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1025/departments/202510-cover-web.jpg?ext=.jpg)

