September 2023 Issue
Feature Articles
As climate change increases the frequency and intensity of wildfires, optics is helping researchers better understand the threats—and reduce the impacts.
by Meeri Kim
Picometer-scale events in the nanoworld can be monitored with topologically structured light, while light-induced interactions and picometric movements can underpin time crystals—a new form of functional photonic material.
by Nikolay I. Zheludev and Kevin F. MacDonaldDepartments and Columns
UV machine vision / Noninvasive embyro screening / Long-distance QKD / Photonic radar monitors vitals / Glass nanoprinting / A world on fire / “Janus” heat cloak / Industry news
A 2022 United Nations report warned of the potential for considerable increases in the intensity and range of wildfires by the end of this century as temperatures rise. Here we look at some of those predictions.
The Evolution of Street Lighting Analysis
European companies Photo Analytical and TechnoTeam are working to combine real-time luminance and geolocation data to make roadways safer.
Fostering Industry Connections
Optica’s Photonic Devices Industry Summit at ficonTEC will offer companies opportunities for networking and growth.
OPN talks with Wilhelm Kaenders about the 50th anniversary of LASER World of Photonics, his own company’s 25th birthday and the road ahead for the laser business.
Also in this Issue
Rethinking the Toolkit for Equity in Education
Diversity and equity make the world better—and make our science and technology richer.
30, 20, and 10 Years Ago in OPN
Diversity in STEM; optical thin film coatings; Tingye Li.
Congressional Fellows / Siegman School / Optica Fellow stories / Innovation School / Falling Walls Science Summit / Advanced Photonics Congress / Nonlinear Optics Topical Meeting / Technical Group prizes
Summary of Optica’s 2022 financial statements.
A comet-like green laser beam passes through a Ti:Sapphire crystal, leaving beautiful diffraction spikes in its path.
![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)
