December 2025 Issue
Feature Articles
This special issue of Optics & Photonics News highlights exciting peer-reviewed optics research that has emerged over the past year.
Congratulations to the winners of OPN’s 20th annual After Image photo contest!
Departments and Columns
Quantum key distribution in 4D / Engineering phonons for efficient perovskites / Toward efficient AI / Illuminating quantum learning / Industry news
Saying Goodbye is an Opportunity to Shine
Condering how making a good “last” impression can open future doors.
Each December, OPN looks at interesting research results of the past year. But what about the year ahead? We asked several “Optics in 2025” contributors for their thoughts.
The Travels of a Quantum Light Source
QuanTour, an IYQ celebration, connected labs around Europe in the name of scientific research and educational outreach.
Also in this Issue
My wish for our community is that we continue to find ways to support each other.
30, 20, and 10 Years Ago in OPN
High brightness, eye-safe lasers; brillouin-zone spectroscopy of photonic lattices; tunable colors on flexible photonic metastructures
In memoriam: Robert Greenler / Global Photonics Economic Forum / Women in Photonics / Best Paper Prizes / Kenya Student Chapter / In Memoriam: Howard Schlossberg / JOSA B pilot / Thank you, editors and volunteers
Oil Droplets Dispersed in Water
Oil droplets dispersed in water create a beautiful natural mosaic. Each droplet acts as a tiny lens, bending and shaping the light into unique patterns.
![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)
