Product Code: ICA10_M601

Laser Ablation by Optical Vortex Beams
Authors:
Takashige Omatsu, Graduate School of Advanced Integration Science, Chiba University; Chiba
Presented at ICALEO 2010

Metal laser ablation using nanosecond optical vortex pulses with orbital angular momentum was performed. Optical vortex was capable of providing energy and cost saving material processing with less debris. Microneedle fabrication on a metal surface based on optical vortex laser ablation was also demonstrated. The resulting needle showed a height of at least 10 m above the target surface and a tip diameter of less than 0.3 m.