Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design

Photoacoustic sensing and imaging techniques have been studied widely to explore optical absorption contrast based on nanosecond laser illumination. In this paper, we report a long laser pulse induced dual photoacoustic (LDPA) nonlinear effect, which originates from unsatisfied stress and thermal co...

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Main Authors: Gao, Fei, Feng, Xiaohua, Zhang, Ruochong, Liu, Siyu, Ding, Ran, Zheng, Yuanjin
Other Authors: School of Electrical and Electronic Engineering
Format: Conference or Workshop Item
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/140469
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1404692020-05-29T06:53:15Z Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design Gao, Fei Feng, Xiaohua Zhang, Ruochong Liu, Siyu Ding, Ran Zheng, Yuanjin School of Electrical and Electronic Engineering 2017 IEEE 12th International Conference on ASIC (ASICON) Engineering::Electrical and electronic engineering Imaging Log-periodic Dipole Antennas Photoacoustic sensing and imaging techniques have been studied widely to explore optical absorption contrast based on nanosecond laser illumination. In this paper, we report a long laser pulse induced dual photoacoustic (LDPA) nonlinear effect, which originates from unsatisfied stress and thermal confinements. Being different from conventional short laser pulse illumination, the proposed method utilizes a long square-profile laser pulse to induce dual photoacoustic signals. Without satisfying the stress confinement, the dual photoacoustic signals are generated following the positive and negative edges of the long laser pulse. More interestingly, the first expansion-induced photoacoustic signal exhibits positive waveform due to the initial sharp rising of temperature. On the contrary, the second contraction-induced photoacoustic signal exhibits exactly negative waveform due to the falling of temperature, as well as pulse-width-dependent signal amplitude. An analytical model is derived to describe the generation of the dual photoacoustic pulses, incorporating Gruneisen saturation and thermal diffusion effect, which is experimentally proved in vivo. 2020-05-29T06:53:15Z 2020-05-29T06:53:15Z 2018 Conference Paper Gao, F., Feng, X., Zhang, R., Liu, S., Ding, R., & Zheng, Y. (2018). Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design. Proceedings of 2017 IEEE 12th International Conference on ASIC (ASICON), 600-603. doi:10.1109/ASICON.2017.8252547 978-1-5090-6626-1 https://hdl.handle.net/10356/140469 10.1109/ASICON.2017.8252547 2-s2.0-85044737431 600 603 en © 2017 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Imaging
Log-periodic Dipole Antennas
spellingShingle Engineering::Electrical and electronic engineering
Imaging
Log-periodic Dipole Antennas
Gao, Fei
Feng, Xiaohua
Zhang, Ruochong
Liu, Siyu
Ding, Ran
Zheng, Yuanjin
Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design
description Photoacoustic sensing and imaging techniques have been studied widely to explore optical absorption contrast based on nanosecond laser illumination. In this paper, we report a long laser pulse induced dual photoacoustic (LDPA) nonlinear effect, which originates from unsatisfied stress and thermal confinements. Being different from conventional short laser pulse illumination, the proposed method utilizes a long square-profile laser pulse to induce dual photoacoustic signals. Without satisfying the stress confinement, the dual photoacoustic signals are generated following the positive and negative edges of the long laser pulse. More interestingly, the first expansion-induced photoacoustic signal exhibits positive waveform due to the initial sharp rising of temperature. On the contrary, the second contraction-induced photoacoustic signal exhibits exactly negative waveform due to the falling of temperature, as well as pulse-width-dependent signal amplitude. An analytical model is derived to describe the generation of the dual photoacoustic pulses, incorporating Gruneisen saturation and thermal diffusion effect, which is experimentally proved in vivo.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Gao, Fei
Feng, Xiaohua
Zhang, Ruochong
Liu, Siyu
Ding, Ran
Zheng, Yuanjin
format Conference or Workshop Item
author Gao, Fei
Feng, Xiaohua
Zhang, Ruochong
Liu, Siyu
Ding, Ran
Zheng, Yuanjin
author_sort Gao, Fei
title Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design
title_short Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design
title_full Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design
title_fullStr Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design
title_full_unstemmed Dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design
title_sort dual-pulse nonlinear photoacoustic imaging : physics, sensing and imaging system design
publishDate 2020
url https://hdl.handle.net/10356/140469
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