Multi-spot polarization state encoded digital feedback system with phase-only spatial light modulators for cyber-physical laser processing system

Yu Takiguchi; Naoaki Kato; Keisuke Uchida; Tomoko Otsu-Hyodo; Kazuhiro Nakamura; Munenori Takumi; Hiroshi Tanaka; Haruyoshi Toyoda

doi:10.1117/12.3004854

13 March 2024 Multi-spot polarization state encoded digital feedback system with phase-only spatial light modulators for cyber-physical laser processing system

Yu Takiguchi, Naoaki Kato, Keisuke Uchida, Tomoko Otsu-Hyodo, Kazuhiro Nakamura, Munenori Takumi, Hiroshi Tanaka, Haruyoshi Toyoda

Author Affiliations +

Proceedings Volume PC12903, AI and Optical Data Sciences V; PC129030Q (2024) https://doi.org/10.1117/12.3004854
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

The arbitrary dynamic control of both amplitude and polarization distributions is attracting strong interest in laser processing field to manage the quality and to collect valuable polarization characteristics of processing materials in smart manufacturing. We present a holographic method to generate arbitrary polarization state of multiple beams by synchronizing two phase-only liquid crystal spatial light modulators (SLMs) with imaging feedback system for hologram designing of each polarization state. This research work will help to accelerate the use of liquid crystal SLMs for high-throughput and optimized additive manufacturing.

Conference Presentation

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Yu Takiguchi, Naoaki Kato, Keisuke Uchida, Tomoko Otsu-Hyodo, Kazuhiro Nakamura, Munenori Takumi, Hiroshi Tanaka, and Haruyoshi Toyoda "Multi-spot polarization state encoded digital feedback system with phase-only spatial light modulators for cyber-physical laser processing system", Proc. SPIE PC12903, AI and Optical Data Sciences V, PC129030Q (13 March 2024); https://doi.org/10.1117/12.3004854

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