Justinas Pupeikis,1 Benjamin Willenberg,1 Francois Bruno,2 Mike Hettich,3 Alexander Nussbaum-Lapping,1 Matthias Golling,1 Carolin P. Bauer,1 Sandro L. Camenzind,1 Benayad Abdelmjid,4 Patrice Camy,4 Bertrand Audoin,2 Christopher R. Phillips,1 Ursula Kellerhttps://orcid.org/0000-0002-1689-80411
1ETH Zurich (Switzerland) 2Univ. de Bordeaux (France) 3Research Ctr. for Non Destructive Testing GmbH (Austria) 4Ctr. de Recherche sur les Ions, les Matériaux et la Photonique, Univ. de Caen Normandie (France)
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We present a free-running 80-MHz polarization-multiplexed solid-state dual-comb laser which delivers 1.8 Watts of average power with 110-fs pulse duration per comb. We apply this free-running dual-comb laser to picosecond ultrasonic measurements via a high-sensitivity pump-probe setup. We demonstrate ultrasonic measurements on thin-film samples, and compare our measurements to ones obtained with a pair of locked femtosecond lasers and x-ray diffraction measurements. Our data show that a free-running dual-comb laser is well-suited for picosecond ultrasonic measurements and thus it offers significant reduction in complexity and cost for this widely adopted non-destructive testing technique.
Justinas Pupeikis,Benjamin Willenberg,Francois Bruno,Mike Hettich,Alexander Nussbaum-Lapping,Matthias Golling,Carolin P. Bauer,Sandro L. Camenzind,Benayad Abdelmjid,Patrice Camy,Bertrand Audoin,Christopher R. Phillips, andUrsula Keller
"Picosecond ultrasonics with a free-running dual-comb laser", Proc. SPIE PC11991, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII, PC119910I (1 April 2022); https://doi.org/10.1117/12.2609555
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Justinas Pupeikis, Benjamin Willenberg, Francois Bruno, Mike Hettich, Alexander Nussbaum-Lapping, Matthias Golling, Carolin P. Bauer, Sandro L. Camenzind, Benayad Abdelmjid, Patrice Camy, Bertrand Audoin, Christopher R. Phillips, Ursula Keller, "Picosecond ultrasonics with a free-running dual-comb laser," Proc. SPIE PC11991, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII, PC119910I (1 April 2022); https://doi.org/10.1117/12.2609555