[10p-N305-1~18] 3.7 Laser processing

[10p-N305-13] Efficient drilling of amorphous alloy foils using low-energy long pulses

〇Takeshi Tsuji^1,2, Shota Yamamoto¹, Hiromasa Hara¹, Hayato Ikemoto¹, Mothoki Ota², Daisuke Nakamura³ (1.Shimane Univ., 2.NEXTA, 3.Kyushu Univ.)

Keywords:laser ablation, long pulse, amorphous alloy

We have found that the use of the long-pulses of a Nd:YAG laser at low energy is a quite efficient for drilling of amorphous alloy metal foils compared with the use of nanosecond pulses.
We proposed that the high efficiency is attributable to two following factors: i) Plama shielding is suppressed because the amount of plasma generation is low.ii) Repetitive drilling is carried out by sub-pulses that compose a long-pulse.