Hamazaki Junichi, Morita Ryuji, Chujo Keisuke, Kobayashi Yusuke, Tanda Satoshi, Omatsu Takashige
Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan.
Opt Express. 2010 Feb 1;18(3):2144-51. doi: 10.1364/OE.18.002144.
Laser ablation of Ta plates using nanosecond optical vortex pulses was carried out, for the first time. It was suggested that owing to orbital angular momentum of optical vortex, clearer and smoother processed surfaces were obtained with less ablation threshold fluence, in comparison with the ablation by a nonvortex annular beam modified from a spatially Gaussian beam.
首次使用纳秒级光学涡旋脉冲对钽板进行了激光烧蚀。研究表明，由于光学涡旋的轨道角动量，与由空间高斯光束修改而来的非涡旋环形光束烧蚀相比，在较低的烧蚀阈值通量下可获得更清晰、更光滑的加工表面。
