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24 November 2023 Laser-matter-interactions in switching spatial light modulator multilayer device structures for high power applications
Selim Elhadj, Zoey Davidson, Yasaman Sargol, Sanam Nahaei
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Proceedings Volume PC12726, Laser-Induced Damage in Optical Materials 2023; PC1272603 (2023) https://doi.org/10.1117/12.2685123
Event: SPIE Laser Damage, 2023, Dublin/Livermore, California, United States
Abstract
An optically addressed light valve is described for high-speed laser beam shaping used in rapid metal additive manufacturing [1]. The resulting Area Printing™ delivers shaped high-power pulses to a metal powder bed that locally sinters and melts to consolidate into a fully dense metal part. This technology and device enable scaling, cheaper additive manufacturing with high spatial resolution and greater efficiency with minimal spatter defects. We address here the unique optoelectronic properties and challenges related to optically addressed photoconducting insulator that control the switching dynamics under high intensity laser irradiation. Further description is presented of the device-level thermomechanical analysis from parasitic absorption of the laser at kW to MW power levels. [1] https://www.seurat.com/area-printing
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Selim Elhadj, Zoey Davidson, Yasaman Sargol, and Sanam Nahaei "Laser-matter-interactions in switching spatial light modulator multilayer device structures for high power applications", Proc. SPIE PC12726, Laser-Induced Damage in Optical Materials 2023, PC1272603 (24 November 2023); https://doi.org/10.1117/12.2685123
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KEYWORDS
High power lasers
Laser applications
Switching
Metals
Semiconductors
Additive manufacturing
Light valves
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