Stressed film patterning (IMAGE)

Optica

Stressed film patterning

Caption

Researchers developed a new way to use femtosecond laser pulses to fabricate the high-precision ultrathin mirrors required for high-performance x-ray telescopes. Femtosecond laser surface ablation is applied to selectively remove stressed film regions on the mirror substrate, correcting the shape of the mirror’s reflective surface.

Credit

Heng Zuo, MIT Kavli Institute for Astrophysics and Space Research

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