[14p-512-1~15] 3.7 Laser processing

△ [14p-512-6] Synthesis and control of semiconductor microspheres by laser ablation in air

〇(M1)Ryohei Tasaki¹, Mitsuhiro Higashihata¹, Daisuke Nakamura¹, Akira Suwa^1,2, Hiroshi Ikenoue^1,2 (1.Grad. Sch. ISEE, Kyushu Univ., 2.Dept. Gigaphoton Next GLP, Kyushu Univ.)

Keywords:laser ablation, zinc oxide, optical vortex

We have succeeded in synthesizing zinc oxide microspheres by laser ablation in air, and demonstrated whispering gallery mode lasing under photoexcitation. In this study, time-resolved observation of generation of semiconductor microspheres by laser ablation with a high-speed camera was performed to elucidate the generation mechanism. In addition, laser ablation with optical vortex pulse was performed to control the size and flying direction.