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COVER STORY

High-Average-Power Ultrafast Lasers

Thomas M. Spinka and Constantin Haefner

Recent advances in the average-power capabilities of lasers with petawatt peak powers are enabling new science and applications in industry, biomedicine and security. Continue Reading


 

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IMAGE OF THE WEEK

White-light interference patterns
White-light interference patterns
Complimentary white-light interference patterns in an air thin film between two glass plates. One pattern is obtained by light reflection; the other one by transmission.

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