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Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics
Ultrafast pump-probe measurements are used to characterize various samples, such as biological cells, bulk, and thin-film structures. However, typical implementations of the pump-probe apparatus are either slow or complex and costly hindering wide deployment. Here we combine a single-cavity dual-com...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9772547/ https://www.ncbi.nlm.nih.gov/pubmed/36570472 http://dx.doi.org/10.1016/j.pacs.2022.100439 |
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author | Pupeikis, J. Hu, W. Willenberg, B. Mehendale, M. Antonelli, G.A. Phillips, C.R. Keller, U. |
author_facet | Pupeikis, J. Hu, W. Willenberg, B. Mehendale, M. Antonelli, G.A. Phillips, C.R. Keller, U. |
author_sort | Pupeikis, J. |
collection | PubMed |
description | Ultrafast pump-probe measurements are used to characterize various samples, such as biological cells, bulk, and thin-film structures. However, typical implementations of the pump-probe apparatus are either slow or complex and costly hindering wide deployment. Here we combine a single-cavity dual-comb laser with a simple experimental setup to obtain pump-probe measurements with ultra-high sensitivity, fast acquisition, and high timing precision over long optical delay scan ranges of 12.5 ns that would correspond to a mechanical delay of about 3.75 m. We employ digital signal balancing to obtain shot-noise-limited detection compatible with pump-probe microscopy deployment. Here we demonstrate ultrafast photoacoustics for thin-film sample characterization. We measured a tungsten layer thickness of (700 ± 4) Å with shot-noise-limited detection. Such single-cavity dual-comb lasers can be used for any pump-probe measurements and are especially well-suited for ultrafast photoacoustic studies such as involving ultrasonic echoes, Brillouin oscillations, surface acoustic waves and thermal dynamics. |
format | Online Article Text |
id | pubmed-9772547 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-97725472022-12-23 Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics Pupeikis, J. Hu, W. Willenberg, B. Mehendale, M. Antonelli, G.A. Phillips, C.R. Keller, U. Photoacoustics Research Article Ultrafast pump-probe measurements are used to characterize various samples, such as biological cells, bulk, and thin-film structures. However, typical implementations of the pump-probe apparatus are either slow or complex and costly hindering wide deployment. Here we combine a single-cavity dual-comb laser with a simple experimental setup to obtain pump-probe measurements with ultra-high sensitivity, fast acquisition, and high timing precision over long optical delay scan ranges of 12.5 ns that would correspond to a mechanical delay of about 3.75 m. We employ digital signal balancing to obtain shot-noise-limited detection compatible with pump-probe microscopy deployment. Here we demonstrate ultrafast photoacoustics for thin-film sample characterization. We measured a tungsten layer thickness of (700 ± 4) Å with shot-noise-limited detection. Such single-cavity dual-comb lasers can be used for any pump-probe measurements and are especially well-suited for ultrafast photoacoustic studies such as involving ultrasonic echoes, Brillouin oscillations, surface acoustic waves and thermal dynamics. Elsevier 2022-12-13 /pmc/articles/PMC9772547/ /pubmed/36570472 http://dx.doi.org/10.1016/j.pacs.2022.100439 Text en © 2022 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Research Article Pupeikis, J. Hu, W. Willenberg, B. Mehendale, M. Antonelli, G.A. Phillips, C.R. Keller, U. Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics |
title | Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics |
title_full | Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics |
title_fullStr | Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics |
title_full_unstemmed | Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics |
title_short | Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics |
title_sort | efficient pump-probe sampling with a single-cavity dual-comb laser: application in ultrafast photoacoustics |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9772547/ https://www.ncbi.nlm.nih.gov/pubmed/36570472 http://dx.doi.org/10.1016/j.pacs.2022.100439 |
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