Programmable focal spot shaping of amplified femtosecond laser pulses.
Programmable focal spot shaping of amplified femtosecond laser pulses.
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DOI：
10.1364/ol.30.001479
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发表时间：
2005-06
期刊：
影响因子：
3.6
通讯作者：
N. Sanner;N. Huot;É. Audouard;C. Larat;J. Huignard;B. Loiseaux
中科院分区：
文献类型：
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作者：
N. Sanner;N. Huot;É. Audouard;C. Larat;J. Huignard;B. Loiseaux
我们描述了可编程空间光束整形的100 kHz，4微焦放大飞秒脉冲在焦平面的波前调制。相位分布由数值迭代过程确定。一种非像素化的光寻址液晶光阀被用作可编程的波前剪裁装置。在焦平面上获得了20微米大小的顶帽、甜甜圈、正方形和三角形。证明了它们对飞秒激光加工的适用性。
We describe the programmable spatial beam shaping of 100-kHz, 4-microJ amplified femtosecond pulses in a focal plane by wave-front modulation. Phase distributions are determined by a numerical iterative procedure. A nonpixelated optically addressed liquid-crystal light valve is used as a programmable wave-front tailoring device. Top-hat, doughnut, square, and triangle shapes of 20-microm size are obtained in a focal plane. Their suitability for femtosecond laser machining is demonstrated.