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30 April 2024 Modeling of femtosecond photoacoustic non-destructive testing in AlCu nanofilms
Zhongyu Wang, Jing Min, Zehan Wang, Xiuguo Chen, Zirong Tang
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Proceedings Volume 13154, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Detector Technologies; 1315403 (2024) https://doi.org/10.1117/12.3013208
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China
Abstract
Photoacoustic detection has shown excellent performance in measuring the thickness and detecting defects in metal nanofilms. However, during ultrafast photoacoustic detection, signal quality depends on both laser parameters and the physical properties of nanofilms. Therefore, it is important to study how physical processes evolve under different laser parameters to improve signal quality in various film materials. In this study, we have developed a comprehensive physical model that combines the Two-Temperature Model with the acoustic wave generation and detection model. Our numerical results, which are based on a 500-nm AlCu film composed of 95% aluminum and 5% copper, closely align with experimental results, demonstrating the validity of this model. This research offers valuable insights for improving photoacoustic signals in practical applications.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Zhongyu Wang, Jing Min, Zehan Wang, Xiuguo Chen, and Zirong Tang "Modeling of femtosecond photoacoustic non-destructive testing in AlCu nanofilms", Proc. SPIE 13154, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Detector Technologies, 1315403 (30 April 2024); https://doi.org/10.1117/12.3013208
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KEYWORDS
Femtosecond phenomena
Nanofilms
Acoustics
Nondestructive evaluation
Ultrafast phenomena
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