UV Durable LCOS for Laser Processing

Sakurai, Yasuki; Nishitateno, Masashi; Ito, Masahiro; Takatoh, Kohki

doi:10.3390/cryst11091047

Cited by 6 publications

(1 citation statement)

References 23 publications

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“…On the other hand, micro electro-mechanical system (MEMS)-SLMs [15] with high reflectivity in the UV range and fused-silica acousto-optical modulators (AOMs) [16] with high transmittance were also used instead of LC-SLMs. Recently, SLMs that are relatively tolerant to UV laser light at wavelengths near 350 nm have become commercially available [17].…”

Section: Introductionmentioning

confidence: 99%

Holographic ultraviolet nanosecond laser processing using adaptive optics

2023

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Fabrication of a through hole in a polyimide film was demonstrated by holographic ultraviolet (UV) nanosecond laser processing with a computer-generated hologram displayed on a phase-only spatial light modulator (SLM). The UV laser was directly modulated into a Bessel beam by a diffractive axicon displayed on the SLM. The direct modulation contributed to improved light-utilization efficiency of the UV laser and a simplified optical setup compared to the conventional method based on a combination of an SLM and harmonic generation using a nonlinear optical crystal. Furthermore, adaptive optics was implemented in holographic laser processing to compensate for aberrations in the optical setup. The proposed method is suitable for improving the throughput and accuracy of drilling, cutting, and additive manufacturing using UV lasers with industrial requirements.

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Section: Introductionmentioning

confidence: 99%

Holographic ultraviolet nanosecond laser processing using adaptive optics

2023

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Laser‐Based Selective Material Processing for Next‐Generation Additive Manufacturing

Park,

Bui

et al. 2023

Advanced Materials

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The connection between laser‐based material processing and additive manufacturing is quite deeply rooted. In fact, the spark that started the field of additive manufacturing was the idea that two intersecting laser beams could selectively solidify a vat of resin. Ever since, laser has been accompanying the field of additive manufacturing, with its repertoire expanded from processing only photopolymer resin to virtually any material, allowing liberating customizability. As a result, additive manufacturing is expected to take an even more prominent role in the global supply chain in years to come. Herein, an overview of laser‐based selective material processing is presented from various aspects: the physics of laser‐material interactions, the materials currently used in additive manufacturing processes, the system configurations that enable laser‐based additive manufacturing, and various functional applications of next‐generation additive manufacturing. Additionally, current challenges and prospects of laser‐based additive manufacturing are discussed.This article is protected by copyright. All rights reserved

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