Femtosecond laser-induced breakdown in distilled water for fabricating the helical microchannels array

  • Li Y
  • Qu S
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We have fabricated complex helical microchannel arrays with uniform diameter in silica glass using femtosecond laser-induced breakdown in distilled water. The generated high-speed jet and shockwave cause cavitation damage in silica glass. Distilled water injected into microchannels through a rubber hose is used for effectively ejecting the debris. The low concentration of debris in the ablated area ensure continuously femtosecond laser-induced breakdown. The distribution, coil number, coil diameter and pitch of the helical microchannel arrays can be controlled.

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  • Yan Li

  • Shiliang Qu

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