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5 March 2021 Acousto-optofluidics for laser writing with parallelized Gaussian, Bessel, and annular beams
Salvatore Surdo, Alessandro Zunino, Alberto Diaspro, Martí Duocastella
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Proceedings Volume 11673, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI; 1167304 (2021) https://doi.org/10.1117/12.2576859
Event: SPIE LASE, 2021, Online Only
Abstract
Bessel and annular laser beams offer intriguing possibilities for material processing. However, current beam shaping methods can be limited in tunability, speed, or parallelization possibilities. Here, we show how ultrasounds in liquids enable generating user-selectable arrays of Gaussian, Bessel-like, or annular beams. By cascading two liquid-filled acoustic cavities, each with a different geometry, light control can be achieved at microsecond time scales. Such an acousto-optic technology is easy to implement in current laser-direct writing workstations, providing an unprecedented ability to tune light fields based on application.
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Salvatore Surdo, Alessandro Zunino, Alberto Diaspro, and Martí Duocastella "Acousto-optofluidics for laser writing with parallelized Gaussian, Bessel, and annular beams", Proc. SPIE 11673, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI, 1167304 (5 March 2021); https://doi.org/10.1117/12.2576859
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KEYWORDS
Acoustics
Beam shaping
Laser processing
Laser systems engineering
Liquids
Materials processing
Optical manipulation
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