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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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. |
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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 |
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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. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Gao, Fei Feng, Xiaohua Zhang, Ruochong Liu, Siyu Ding, Ran Zheng, Yuanjin |
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Conference or Workshop Item |
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Gao, Fei Feng, Xiaohua Zhang, Ruochong Liu, Siyu Ding, Ran Zheng, Yuanjin |
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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 |
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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 |
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2020 |
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https://hdl.handle.net/10356/140469 |
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