Hologram optimized in holographic laser processing system

Honghao Zhang; Satoshi Hasegawa; Haruyoshi Toyoda; Yoshio Hayasaki

doi:10.1117/12.2616251

27 October 2021 Hologram optimized in holographic laser processing system

Honghao Zhang, Satoshi Hasegawa, Haruyoshi Toyoda, Yoshio Hayasaki

Proceedings Volume 11927, Optical Technology and Measurement for Industrial Applications Conference 2021; 1192709 (2021) https://doi.org/10.1117/12.2616251
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

We proposed an optimization method of a hologram in holographic laser processing. The laser beam was diffracted by a designed computer-generated hologram (CGH) displayed on a liquid-crystal-on-silicon (SLM), and then formed spatially shaped three-dimensional optical pattern which detected by a CCD image sensor at different focal position for continuously optimizing with the weighted iterative Fourier transform (WIFT) algorithm. The uniformity of the pattern was increased from 11% to 95%, which was also well proved by the corresponding 3D processing results. This method provides the holographic laser processing system with high-stability, that is, the ability to dynamically compensate for system imperfections, and has the ability to be suitable for a wide range of high-precision, high-throughput applications in the field of 3D manufacturing.

Citation Download Citation

Honghao Zhang, Satoshi Hasegawa, Haruyoshi Toyoda, and Yoshio Hayasaki "Hologram optimized in holographic laser processing system", Proc. SPIE 11927, Optical Technology and Measurement for Industrial Applications Conference 2021, 1192709 (27 October 2021); https://doi.org/10.1117/12.2616251

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