Controlling light with sound for enhanced materials processing

Martí Duocastella

doi:10.1117/12.3001039

13 March 2024 Controlling light with sound for enhanced materials processing

Martí Duocastella

Author Affiliations +

Proceedings Volume PC12872, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIX; PC128720G (2024) https://doi.org/10.1117/12.3001039
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

The targeted and timely delivery of light at precise locations on a sample is central for laser materials processing. However, such a task can be limited by the optical properties of the sample or the mechanical inertia of systems required to focus, split or move the light. Here, I will show how ultrasound in liquids can address these issues and achieve rapid and precise 3D control of light, even inside scattering media. The gist of our approach is based on exploiting the acousto-optic effect in liquid-filled ultrasonic cavities. By properly selecting the geometry of the cavity, light guiding, splitting, and Bessel-beam shaping can be achieved at sub-microsecond timescales. Our results are a promising step toward on-demand and high-throughput additive and subtractive microfabrication.

Conference Presentation

Citation Download Citation

Martí Duocastella "Controlling light with sound for enhanced materials processing", Proc. SPIE PC12872, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIX, PC128720G (13 March 2024); https://doi.org/10.1117/12.3001039

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