Improvement of focused ultrasonic beam generated by laser phased array : Theoretical analysis

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dc.contributor.authorChang, Ying
dc.contributor.authorYang, Dexing
dc.contributor.authorGuo, Yuning
dc.date.accessioned2019-02-18T10:04:08Z
dc.date.available2019-02-18T10:04:08Z
dc.date.issued2019-01-21eng
dc.description.abstractTo improve the focused ultrasonic beam induced by laser phased array (LPA), the superiority of an improved LPA distribution with conjunction of geometric attenuation and directivity functions of the stimulated ultrasonic beams are investigated theoretically instead of only considering the directivity function. Numerical simulations for the generation of focused longitudinal waves in the thermoelastic regime were implemented to reveal the advantages of the improved LPA design. It is shown that the amplitude of the focused beam increased by 42.1%, and the rise time reduced by 25.0%, as well as spatial sizes narrowed by 50.6% and 41.9% in longitudinal and transverse directions, respectively. In addition, the thermal expansion superposition caused by adjacent laser pulses, which deteriorates the focusing features of the focused beam, should be avoided by setting proper spacing of LPA.eng
dc.description.versionpublishedde
dc.identifier.doi10.1063/1.5063509eng
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/45065
dc.language.isoengeng
dc.subject.ddc530eng
dc.titleImprovement of focused ultrasonic beam generated by laser phased array : Theoretical analysiseng
dc.typeJOURNAL_ARTICLEde
dspace.entity.typePublication
kops.citation.bibtex
@article{Chang2019-01-21Impro-45065,
  year={2019},
  doi={10.1063/1.5063509},
  title={Improvement of focused ultrasonic beam generated by laser phased array : Theoretical analysis},
  number={3},
  volume={125},
  issn={0021-8979},
  journal={Journal of Applied Physics},
  author={Chang, Ying and Yang, Dexing and Guo, Yuning},
  note={Article Number: 033104}
}
kops.citation.iso690CHANG, Ying, Dexing YANG, Yuning GUO, 2019. Improvement of focused ultrasonic beam generated by laser phased array : Theoretical analysis. In: Journal of Applied Physics. 2019, 125(3), 033104. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.5063509deu
kops.citation.iso690CHANG, Ying, Dexing YANG, Yuning GUO, 2019. Improvement of focused ultrasonic beam generated by laser phased array : Theoretical analysis. In: Journal of Applied Physics. 2019, 125(3), 033104. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.5063509eng
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kops.sourcefieldJournal of Applied Physics. 2019, <b>125</b>(3), 033104. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.5063509deu
kops.sourcefield.plainJournal of Applied Physics. 2019, 125(3), 033104. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.5063509deu
kops.sourcefield.plainJournal of Applied Physics. 2019, 125(3), 033104. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.5063509eng
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source.bibliographicInfo.volume125eng
source.identifier.eissn1089-7550eng
source.identifier.issn0021-8979eng
source.periodicalTitleJournal of Applied Physicseng

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