Ultrashort laser pulse amplified by back-and-forth propagation

www.nature.com

Ultrashort laser pulse amplified by back-and-forth propagation

www.nature.com

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NatureEnglish · 20 hours ago

Nature, Published online: 05 November 2025; doi:10.1038/d41586-025-03449-y

It is challenging to generate ultrashort laser pulses at high powers, but repeatedly overlapping light pulses in a crystal can efficiently amplify a weak signal.

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