Surface mico-structures on amorphous alloys induced by vortex femtosecond laser pulses

• 作 者: 冉玲苓 曲士良 郭忠义
• 机 构: Department of Optoelectronic Science,Harbin Institute of Technology at Weihai,Department of Physics,
• 出 处: Chinese Physics B
• 发表日期: 2010年03期
• 关键词: amorphous vortex ablation interpret irradiation organized perpendicular irradiat

This paper investigates the generation of self-organized surface structures on amorphous alloys by vortex femtosecond laser pulses.The scanning electron microscope characterizations show that the as-formed structures are periodic ripples,aperiodic ripples,and ’coral-like’ structures.Optimal conditions for forming these surface structures are determined in terms of pulses number at a given pulse energy.The applicable mechanism is suggested to interpret the formation and evolution of the ’coral-like’ structures.

This paper investigates the generation of self-organized surface structures on amorphous alloys by vortex femtosecond laser pulses. The scanning electron microscope characterizations show that the as-formed structures are periodic ripples, aperiodic ripples, and ’coral-like’ structures. Optimal conditions for forming these surface structures are determined in terms of pulses number at a given pulse energy. The applicable mechanism is suggested to interpret the formation and evolution of the ’coral-like’ structures.