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

Chang, Ying; Yang, Dexing; Guo, Yuning

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

Dateien

Zu diesem Dokument gibt es keine Dateien.

Datum

2019

Autor:innen

Chang, Ying

Yang, Dexing

Guo, Yuning

DOI (zitierfähiger Link)

https://doi.org/10.1063/1.5063509

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of Applied Physics. 2019, 125(3), 033104. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.5063509

Zusammenfassung

To 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.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

CHANG, 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: 10.1063/1.5063509

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}
}

RDF

<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/45065">
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-02-18T10:04:08Z</dcterms:available>
    <dcterms:abstract xml:lang="eng">To 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.</dcterms:abstract>
    <dcterms:title>Improvement of focused ultrasonic beam generated by laser phased array : Theoretical analysis</dcterms:title>
    <dc:contributor>Yang, Dexing</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-02-18T10:04:08Z</dc:date>
    <dc:language>eng</dc:language>
    <dc:creator>Yang, Dexing</dc:creator>
    <dcterms:issued>2019-01-21</dcterms:issued>
    <dc:contributor>Guo, Yuning</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:creator>Guo, Yuning</dc:creator>
    <dc:contributor>Chang, Ying</dc:contributor>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/45065"/>
    <dc:creator>Chang, Ying</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
  </rdf:Description>
</rdf:RDF>

Begutachtet

Ja