January 2018 Issue
Feature Articles
Laser Wakefield Accelerators: Next-Generation Light Sources
A new breed of compact particle accelerators, capable of producing electron-beam energies in the GeV range, could soon bring some of the experimental power of synchrotrons and X-ray free-electron lasers to a tabletop near you.
by Félicie AlbertDepartments and Columns
What’s Hot in Optics and Photonics?
The answer depends largely on where you look.
Exceptional Points: An Emerging Tool for Sensor Applications
Leveraging singularities in non-energy-conserving optical systems could open up a new route to ultrasensitive devices.
Also in this Issue
OSA Fellow stories; World Science Day; New York start-up accelerator; Tucson Industrial Affiliates; Light, Energy and Environment Congress; new Honorary Members; awards for Winzer and Leuchs; Invented at Duke; IONS Okinawa; Thanks, volunteers and editors.

![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)