Optics & Photonics News Magazine
May 2022 Issue
May 2022 Issue
Feature Articles
Departments and Columns
Conversations
CLEO 2022 Returns to the Stage
Optica Fellows Hui Cao and Peter J. Delfyett are among four plenary speakers featured at this year’s hybrid live/online conference.
Tutorial
Laser Acceleration of Proton Beams
A technique using high-intensity light pulses could advance research on cancer therapies.
Also in this Issue
Looking Back
30, 20, and 10 Years Ago in OPN
Ultrafast optical and optoelectronic phenomena; diode lasers and the laser market; discovery of deuterium

![Manual probe system with needles for test of semiconductor on silicon wafer. [A. Morozov / Getty]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1125/departments/202511-cover-web.jpg?ext=.jpg)
![Researcher Clara Saraceno in the lab. [Image by Carsten Behler Photography]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1025/departments/202510-cover-web.jpg?ext=.jpg)