GHz burst mode femtosecond laser pulses enabling creation of unique two-dimensional (2D) periodic structures on silicon surfaces that is distinct from the 1D structures fabricated by the conventional single-pulse mode (IMAGE)

International Journal of Extreme Manufacturing

GHz burst mode femtosecond laser pulses enabling creation of unique two-dimensional (2D) periodic structures on silicon surfaces that is distinct from the 1D structures fabricated by the conventional single-pulse mode

Caption

It’s well known that irradiation of linearly polarized femtosecond laser pulses (single-pulse mode) creates one-dimensional (1D) laser-induced periodic surface structures (LIPSS) whose direction is perpendicular to the laser polarization direction. Interestingly, GHz burst mode femtosecond laser pulses can create unique 2D LIPSS which are composed of periodic surface structures both parallel and perpendicular to the laser polarization direction. The ability of the GHz burst mode enabling the fabrication of 2D LIPSS will diversify micro and nanostructuring to achieve highly functionalized material surfaces.

Credit

By Shota Kawabata, Shi Bai, Kotaro Obata, Godai Miyaji and Koji Sugioka.

Usage Restrictions

Credit must be given to the creator.

License

CC BY

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