Feature Articles
How Short Is Ultrashort?
Our inability to accurately measure ultrashort pulses has held back applications in this field. But all that is changing.
by Howard RauschADVERTISEMENT
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![An artist’s rendering of a pulse of circularly polarized light hitting a 2D semiconductor. [Illustration by S. Alvey / University of Michigan]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/0125/departments/202501-cover-web.jpg?ext=.jpg)
