Sally Cole Johnson

Senior Technical Editor
Sally Cole Johnson

Sally Cole Johnson has worked as a writer for over 20 years, covering physics, semiconductors, electronics, quantum, the Internet of Things (IoT), optics, photonics, high-performance computing, IT networking and security, neuroscience, and military embedded systems. She served as an associate editor for Laser Focus World in the early 2000s, and rejoined the editorial team as senior technical editor in January 2022.

(Photo credit: Besim Mazhiqi, PHoQS, Paderborn University)
Test & Measurement

New tool determines characteristics of light-based quantum states

May 6, 2024
Researchers develop a technique to measure the quantum mechanical properties of electromagnetic fields at the single-photon level.
(Image credit: Zhaoyang Li)
Optics

Hyperbolic mirrors enhance petawatt laser focus

May 2, 2024
Researchers discover single-wavelength focal spots can be achieved by combining a rotational hyperbolic mirror with a parabolic mirror for current femtosecond petawatt-class lasers...
(Image credit: Stefano Bonetti)
Lasers & Sources

Laser light unleashes quantum behavior at room temperature

May 1, 2024
Researchers discover a large class of materials can be made magnetic via laser light—at room temperature—and it opens a new pathway to designing materials with light.