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...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Photoacoustics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213597922001045 |
| _version_ | 1811166124772950016 |
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| author | J. Pupeikis W. Hu B. Willenberg M. Mehendale G.A. Antonelli C.R. Phillips U. Keller |
| author_facet | J. Pupeikis W. Hu B. Willenberg M. Mehendale G.A. Antonelli C.R. Phillips U. Keller |
| author_sort | J. Pupeikis |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-10T15:48:33Z |
| format | Article |
| id | doaj.art-68f87ff1a3034cb8a92cefcd2ee4118e |
| institution | Directory Open Access Journal |
| issn | 2213-5979 |
| language | English |
| last_indexed | 2024-04-10T15:48:33Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Photoacoustics |
| spelling | doaj.art-68f87ff1a3034cb8a92cefcd2ee4118e2023-02-12T04:14:44ZengElsevierPhotoacoustics2213-59792023-02-0129100439Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacousticsJ. Pupeikis0W. Hu1B. Willenberg2M. Mehendale3G.A. Antonelli4C.R. Phillips5U. Keller6ETH Zurich, Auguste-Piccard-Hof 1, Zurich 8093, Switzerland; Corresponding author.ETH Zurich, Auguste-Piccard-Hof 1, Zurich 8093, SwitzerlandETH Zurich, Auguste-Piccard-Hof 1, Zurich 8093, SwitzerlandOnto Innovation Inc., 16 Jonspin Road, Wilmington, MA 01887, USAOnto Innovation Inc., 16 Jonspin Road, Wilmington, MA 01887, USAETH Zurich, Auguste-Piccard-Hof 1, Zurich 8093, SwitzerlandETH Zurich, Auguste-Piccard-Hof 1, Zurich 8093, SwitzerlandUltrafast 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.http://www.sciencedirect.com/science/article/pii/S2213597922001045Ultrafast pump-probePicosecond ultrasonicsPump-probe microscopyTime domain thermoreflectanceTDTRTime-resolved Brillouin oscillations |
| spellingShingle | J. Pupeikis W. Hu B. Willenberg M. Mehendale G.A. Antonelli C.R. Phillips U. Keller Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics Photoacoustics Ultrafast pump-probe Picosecond ultrasonics Pump-probe microscopy Time domain thermoreflectance TDTR Time-resolved Brillouin oscillations |
| 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 | Ultrafast pump-probe Picosecond ultrasonics Pump-probe microscopy Time domain thermoreflectance TDTR Time-resolved Brillouin oscillations |
| url | http://www.sciencedirect.com/science/article/pii/S2213597922001045 |
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