[18p-S4_201-1~11] 3.6 Laser processing

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[18p-S4_201-10] In-system CGH optimization based on laser-induced luminescence

〇Yoshio Hayasaki¹, Koichi Takahashi¹, Satoshi Hasegawa¹ (1.Utsunomiya Univ.)

Keywords:

femtosecond laser processing,computer-generated holography

Holographic beam shaping using a computer-generated hologram (CGH) offers high throughput, high stability, and high flexibility in material laser processing. In-system CGH optimization, which optimizes a CGH within the optical system, enables the generation of desired beam patterns while compensating for the optical system's imperfections. In this presentation, we propose and demonstrate the in-system CGH optimization based on the laser-induced fluorescence.