Properties of an optically addressable liquid crystal spatial light modulator (SLM) used for fast Area Printing metal additive manufacturing (3D printing)

Selim Elhadj; Yasaman Sargol; Sanam Nahaei; Nick Brennan; Zoey Davidson

doi:10.1117/12.3000240

13 March 2024 Properties of an optically addressable liquid crystal spatial light modulator (SLM) used for fast Area Printing metal additive manufacturing (3D printing)

Selim Elhadj, Yasaman Sargol, Sanam Nahaei, Nick Brennan, Zoey Davidson

Author Affiliations +

Proceedings Volume PC12907, Emerging Liquid Crystal Technologies XIX; PC129070B (2024) https://doi.org/10.1117/12.3000240
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

An optically addressable liquid crystal spatial light modulator (SLM) is used for dynamic laser beam shaping used in a unique, fast metal additive manufacturing process (3D printing) [1]. We address challenges of using our SLM exposed continuously to high power kW-MW lasers. Control of liquid crystals is coupled to the optical-response of the photoconducting insulators that affects contrast, switching speed, and laser power handling. We compare liquid crystal materials laser damage rationalized based on their thermal properties, and highlight device-level stresses via computational modeling. Key areas of liquid crystals and semiconductor properties are presented that impact optically addressed SLM for power switching applications. [1] https://www.seurat.com/area-printing

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Citation Download Citation

Selim Elhadj, Yasaman Sargol, Sanam Nahaei, Nick Brennan, and Zoey Davidson "Properties of an optically addressable liquid crystal spatial light modulator (SLM) used for fast Area Printing metal additive manufacturing (3D printing)", Proc. SPIE PC12907, Emerging Liquid Crystal Technologies XIX, PC129070B (13 March 2024); https://doi.org/10.1117/12.3000240

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