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Additive laser excitation of giant nonlinear surface acoustic wave pulses

  • The technique of laser ultrasonics perfectly meets the need for noncontact, noninvasive, nondestructive mechanical probing of nanometer- to millimeter-size samples. However, this technique is limited to the excitation of low-amplitude strains, below the threshold for optical damage of the sample. In the context of strain engineering of materials, alternative optical techniques enabling theThe technique of laser ultrasonics perfectly meets the need for noncontact, noninvasive, nondestructive mechanical probing of nanometer- to millimeter-size samples. However, this technique is limited to the excitation of low-amplitude strains, below the threshold for optical damage of the sample. In the context of strain engineering of materials, alternative optical techniques enabling the excitation of high-amplitude strains in a nondestructive optical regime are needed. We introduce here a nondestructive method for laser-shock wave generation based on additive superposition of multiple laser-excited strain waves. This technique enables strain generation up to mechanical failure of a sample at pump laser fluences below optical ablation or melting thresholds. We demonstrate the ability to generate nonlinear surface acoustic waves (SAWs) in Nb-SrTiO3 substrates, with associated strains in the percent range and pressures up to 3 GPa at 1 kHz repetition rate and close to 10 GPa for several hundred shocks. This study paves the way for the investigation of a host of high-strain SAW-induced phenomena, including phase transitions in conventional and quantum materials, plasticity and a myriad of material failure modes, chemistry and other effects in bulk samples, thin layers, and two-dimensional materials.show moreshow less

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Metadaten
Document Type:Article (reviewed)
Zitierlink: https://opus.hs-offenburg.de/8415
Bibliografische Angaben
Title (English):Additive laser excitation of giant nonlinear surface acoustic wave pulses
Author:Jude Deschamps, Yun Kai, Jet Lem, Ievgeniia Chaban, Alexey M. LomonosovStaff MemberORCiDGND, Abdelmadjid Anane, Steven E. Kooi, Keith A. Nelson, Thomas Pezeril
Year of Publication:2023
Date of first Publication:2023/10/17
Creating Corporation:American Physical Society
Article Number:044044
Parent Title (English):Physical Review Applied
Volume:20
Issue:4
ISSN:2331-7019
DOI:https://doi.org/10.1103/PhysRevApplied.20.044044
Language:English
Inhaltliche Informationen
Institutes:Fakultät Wirtschaft (W)
Collections of the Offenburg University:Bibliografie
Tag:Acoustic wave phenomena; Additive manufacturing; Laser ablation; Optical techniques; Strain engineering; Surface acoustic wave
Formale Angaben
Relevance for "Jahresbericht über Forschungsleistungen":Wiss. Zeitschriftenartikel reviewed: Listung in Master Journal List
Open Access: Closed 
Licence (German):License LogoUrheberrechtlich geschützt