Novel optical materials/structure and applications (3)

[ALPS8-03] Topological texturing and structuring of tungsten using optical vortex femtosecond laser ablation.

*Haruki Kawaguchi^1,2, Ryo Yasuhara^1,2, Haotian Yang², Reina Miyagawa³, Koji Sugioka⁴, Chika Hori¹, Masato Ota^1,2, Hiyori Uehara^1,2 (1. National Institute for Fusion Science, National Institutes of Natural Sciences, 2. The Graduate University for Advanced Studies, SOKENDAI, 3. Department of Physical Science and Engineering, Nagoya Institute of Technology, 4. RIKEN, Center for Advanced Photonics)

We have demonstrated the formation of laser-induced periodic surface structures (LIPSS) on tungsten using a vector vortex laser. The vector vortex laser processing provided attractive 2-dimensional chiral texturing and 3-dimensional topological structuring on tungsten.