Abstract

Material processing with an optical vortex beam is attracting a great deal of interest due to unique phenomena such as twisting material [1] and straight jetting of droplets [2,3] with interaction between orbital angular momentum (OAM) of light and matter. In addition, the jetting droplets can apply as effective printing technique, which is called as optical vortex laser-induced forward transfer, and well-controlled fabrication of nano/micro particles, because OAM induces rotation of the droplets, which will stabilize the droplet ejection by gyro effect [4]. In this study, we focus on the unique laser processing by the optical vortex beam to clarify the possible mechanism and to create a novel material processing.

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