Optics & Photonics News Magazine
December 2020 Issue
December 2020 Issue
Departments and Columns
Career Focus
Understanding Ph.D. Applications
Whether you’re an undergraduate, an adviser or on an admissions committee, start thinking about Ph.D. applications as a job search.
Also in this Issue
President's Message
Looking Back
30, 20, and 10 Years Ago in OPN
Femtosecond technology; diffraction imaging; light patterns.
OSA Update
After Image
![Technicians inspect a wafer at a semiconductor manufacturing plant. [Photo Getty Images]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2026/1126/departments/202611-cover-web.jpg?ext=.jpg)
![3D-rendered illustration of a laser scanning of the human eye. [Getty Images]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2026/1026/departments/202610-cover-web.jpg?ext=.jpg)
![Illustration of a neuron. [Getty Images]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2026/0926/departments/202609-cover-web.jpg?ext=.jpg)