Multilayer transducer for highly efficient initiation of time-resolved Brillouin scattering
Structures made of a metallic film deposited on a substrate are conventionally used as opto-acoustic transducers for picosecond ultrasonic experiments where detection in the time domain of the Brillouin scattering in a transparent sample is sought. In this paper, we substitute the metallic film for...
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| Veröffentlicht in: | Applied physics letters 2022-05, Vol.120 (21) |
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| container_title | Applied physics letters |
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| creator | Bruno, François Saint-Martin, Loïc Thuau, Damien Audoin, Bertrand |
| description | Structures made of a metallic film deposited on a substrate are conventionally used as opto-acoustic transducers for picosecond ultrasonic experiments where detection in the time domain of the Brillouin scattering in a transparent sample is sought. In this paper, we substitute the metallic film for a periodic stack of nanometric layers made of gold and lithium fluoride to increase the amplitude, at the Brillouin frequency shift, of the strain generated by the photo-thermal effect. A model is used to analyze the generated strain amplification with the volume fraction and with the total thickness of this structure and to evaluate the gain in terms of sample dynamic reflectivity changes. Amplification by a factor of 20 is measured when using the composite structure with respect to signals detected with a transducer made of a single gold layer. |
| doi_str_mv | 10.1063/5.0092113 |
| format | Article |
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In this paper, we substitute the metallic film for a periodic stack of nanometric layers made of gold and lithium fluoride to increase the amplitude, at the Brillouin frequency shift, of the strain generated by the photo-thermal effect. A model is used to analyze the generated strain amplification with the volume fraction and with the total thickness of this structure and to evaluate the gain in terms of sample dynamic reflectivity changes. Amplification by a factor of 20 is measured when using the composite structure with respect to signals detected with a transducer made of a single gold layer.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/5.0092113</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Amplification ; Applied physics ; Composite structures ; Engineering Sciences ; Frequency shift ; Gold ; Lithium ; Lithium fluoride ; Mechanics ; Multilayers ; Scattering ; Substrates ; Temperature effects ; Thickness ; Transducers ; Ultrasonic testing</subject><ispartof>Applied physics letters, 2022-05, Vol.120 (21)</ispartof><rights>Author(s)</rights><rights>2022 Author(s). 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Amplification by a factor of 20 is measured when using the composite structure with respect to signals detected with a transducer made of a single gold layer.</description><subject>Amplification</subject><subject>Applied physics</subject><subject>Composite structures</subject><subject>Engineering Sciences</subject><subject>Frequency shift</subject><subject>Gold</subject><subject>Lithium</subject><subject>Lithium fluoride</subject><subject>Mechanics</subject><subject>Multilayers</subject><subject>Scattering</subject><subject>Substrates</subject><subject>Temperature effects</subject><subject>Thickness</subject><subject>Transducers</subject><subject>Ultrasonic testing</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNqdkE9LwzAYh4MoOKcHv0HAk0Jn0tc2zXEOdcLEi548hDRNtoysmUk62Le3c8PdPb1_ePjx40HompIRJSXcFyNCeE4pnKABJYxlQGl1igaEEMhKXtBzdBHjsj-LHGCAvt46l6yTWx1wCrKNTaf61fiAF3a-cFusjbHK6jZh29pkZbK-xd7gZFc6Czp6t9ENfgzWOd_ZFkclU9LBtvNLdGaki_rqMIfo8_npYzLNZu8vr5PxLFNQ0pQpxplmymjOVcO44aTWIKuGg1YcKqgJhTKXTcWA1A8gZc1oX19VxlR1XSsYott97kI6sQ52JcNWeGnFdDwTux8BlueM0w3t2Zs9uw7-u9MxiaXvQtvXE3lZsl5dTopjogo-xqDNXywlYudZFOLguWfv9mxUNv3a-R-88eEIinVj4Ad9joxd</recordid><startdate>20220523</startdate><enddate>20220523</enddate><creator>Bruno, François</creator><creator>Saint-Martin, Loïc</creator><creator>Thuau, Damien</creator><creator>Audoin, Bertrand</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0003-4632-9883</orcidid><orcidid>https://orcid.org/0000-0001-6956-2210</orcidid></search><sort><creationdate>20220523</creationdate><title>Multilayer transducer for highly efficient initiation of time-resolved Brillouin scattering</title><author>Bruno, François ; Saint-Martin, Loïc ; Thuau, Damien ; Audoin, Bertrand</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-c797e7cfe99cd79f90be3a8d93ec9383b01362ad8730b43aab71005c8ff8bbbc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Amplification</topic><topic>Applied physics</topic><topic>Composite structures</topic><topic>Engineering Sciences</topic><topic>Frequency shift</topic><topic>Gold</topic><topic>Lithium</topic><topic>Lithium fluoride</topic><topic>Mechanics</topic><topic>Multilayers</topic><topic>Scattering</topic><topic>Substrates</topic><topic>Temperature effects</topic><topic>Thickness</topic><topic>Transducers</topic><topic>Ultrasonic testing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bruno, François</creatorcontrib><creatorcontrib>Saint-Martin, Loïc</creatorcontrib><creatorcontrib>Thuau, Damien</creatorcontrib><creatorcontrib>Audoin, Bertrand</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bruno, François</au><au>Saint-Martin, Loïc</au><au>Thuau, Damien</au><au>Audoin, Bertrand</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Multilayer transducer for highly efficient initiation of time-resolved Brillouin scattering</atitle><jtitle>Applied physics letters</jtitle><date>2022-05-23</date><risdate>2022</risdate><volume>120</volume><issue>21</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>Structures made of a metallic film deposited on a substrate are conventionally used as opto-acoustic transducers for picosecond ultrasonic experiments where detection in the time domain of the Brillouin scattering in a transparent sample is sought. 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| ispartof | Applied physics letters, 2022-05, Vol.120 (21) |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Amplification Applied physics Composite structures Engineering Sciences Frequency shift Gold Lithium Lithium fluoride Mechanics Multilayers Scattering Substrates Temperature effects Thickness Transducers Ultrasonic testing |
| title | Multilayer transducer for highly efficient initiation of time-resolved Brillouin scattering |
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