Periodic ripple structures on silicon substrates induced by femtosecond laser at various scan modes

Li, B. J.; Zhou, Ming; Wu, Bo

doi:10.1007/s00339-012-7460-y

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2015

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“…Conversely, the ripple has an ambiguous morphology when the scan velocity is high. Therefore, the morphology and quality of a ripple structure are closely related to the laser scan velocity [24].…”

Section: Resultsmentioning

confidence: 99%

Periodic surface structures induced by femtosecond laser single pulse and pulse trains on metals

et al. 2015

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We experimentally investigate the formation of nanostructures on the surfaces of aluminum and copper with femtosecond laser single pulse and pulse trains. Subwavelength ripples were obtained on the surface of aluminum. The ripples' period gradually increases as the laser pulse fluence increases. With a single pulse ablation of copper, interlaced ripple structures formed on the wall of the crater when the laser pulse number is 2000, the reason for interlaced ripple formation is also discussed. A large scale of ripple structures formed by using a femtosecond laser single pulse and pulse trains to scan copper. We suggest that a pulse train is more effective in obtaining high quality ripple structures compared with a femtosecond laser single pulse.

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Section: Resultsmentioning

confidence: 99%