Results 11 to 20 of about 1,443 (165)

Evaluation of the Structural Phase Transition in Multiferroic (Bi_1−x Pr_x)(Fe_0.95 Mn_0.05)O₃ Thin Films by A Multi-Technique Approach Including Picosecond Laser Ultrasonics [PDF]

Applied Sciences, 2019
Picosecond laser ultrasonics is an experimental technique for the generation and detection of ultrashort acoustic pulses using ultrafast lasers. In transparent media, it is often referred to as time-domain Brillouin scattering (TDBS).
Samuel Raetz, Alexey Lomonosov, Sergey Avanesyan, Nikolay Chigarev, Elton de Lima Savi, Alain Bulou, Nicolas Delorme, Zheng Wen, Qiao Jin, Maju Kuriakose, Anthony Rousseau, Gwenaëlle Vaudel, Pascal Ruello, Di Wu, Vitalyi Gusev   +14 more
doaj   +2 more sources

Picosecond ultrasonics with miniaturized semiconductor lasers [PDF]

Ultrasonics, 2020
There is a great desire to extend ultrasonic techniques to the imaging and characterization of nanoobjects. This can be achieved by picosecond ultrasonics, where by using ultrafast lasers it is possible to generate and detect acoustic waves with frequencies up to terahertz and wavelengths down to nanometers.
Kobecki, Michael, Tandoi, Giuseppe, Di Gaetano, Eugenio, Sorel, Marc, Scherbakov, Alexey V., Czerniuk, Thomas, Schneider, Christian, Kamp, Martin, Höfling, Sven, Akimov, Andrey V., Bayer, Manfred   +10 more
openaire   +7 more sources

Picosecond ultrasonics with a free-running dual-comb laser

Optics Express, 2021
We present a free-running 80-MHz dual-comb polarization-multiplexed solid-state laser which delivers 1.8 W of average power with 110-fs pulse duration per comb. With a high-sensitivity pump-probe setup, we apply this free-running dual-comb laser to picosecond ultrasonic measurements.
Justinas Pupeikis, Benjamin Willenberg, Francois Bruno, Mike Hettich, Alexander Nussbaum-Lapping, Matthias Golling, Carolin P. Bauer, Sandro L. Camenzind, Abdelmjid Benayad, Patrice Camy, Bertrand Audoin, Christopher R. Phillips, Ursula Keller   +12 more
openaire   +6 more sources

Fundamentals of picosecond laser ultrasonics [PDF]

Ultrasonics, 2015
The aim of this article is to provide an introduction to picosecond laser ultrasonics, a means by which gigahertz-terahertz ultrasonic waves can be generated and detected by ultrashort light pulses. This method can be used to characterize materials with nanometer spatial resolution.
Osamu Matsuda, LARCIPRETE, Maria Cristina, LI VOTI, Roberto, B. Wright Oliver   +3 more
openaire   +2 more sources

Apparent attenuation by opto-acoustic defocus in phonon microscopy

Photoacoustics, 2020
Understanding the mechanical properties of biological cells is a challenging problem for the life sciences partly because there are limited methods for mapping elasticity with high resolution.
Fernando Pérez-Cota, Salvatore La Cavera III, Shakila Naznin, Rafael Fuentes-Domínguez, Richard J. Smith, Matt Clark   +5 more
doaj   +1 more source

Femtosecond nonlinear ultrasonics in gold probed with ultrashort surface plasmons [PDF]

, 2012
Fundamental interactions induced by lattice vibrations on ultrafast time scales become increasingly important for modern nanoscience and technology. Experimental access to the physical properties of acoustic phonons in the THz frequency range and over ...
A Devos, AV Scherbakov, B Koopmans, C de la Fuente, C Thomsen, C V. Korff Schmising, G Steinle-Neumann, G Tas, H Park, HY Hao, J Behari, JW Kim, K Sokolowski-Tinten, L Thevenard, M Getzlaff, M van Exter, ME Siemens, MR Armstrong, O Matsuda, OB Wright, P Nagpal, PA Mante, PJS van Capel, RM Bozorth, RW Rendell, T Saito, VV Temnov, VV Temnov, VV Temnov, X Tang, Y Hiki   +30 more
core   +2 more sources

Application of transient femtosecond polarimetry / ellipsometry technique in picosecond laser ultrasonics [PDF]

Journal of Physics: Conference Series, 2007
The method of time-resolved polarimetry has been employed to monitor picosecond acoustic pulses. The technique is able to resolve longitudinal and shear echoes separated by less than 10ps. A proper choice of the incident polarization state gives the opportunity to tune the sensitivity to a particular acoustic mode.
D Mounier, E Morosov, P Ruello, M Edely, P Babilotte, C Mechri, J-M Breteau, V Gusev   +7 more
openaire   +1 more source

Surface Acoustic Waves in Thin Films Nanometrology [PDF]

, 2015
Thin films nanometrology is an emerging field in nanoscience as the synthesis, processing and applications of nanostructured thin films require an in-depth knowledge of their elastic constants. The elastic energy of a surface acoustic wave propagating in
BETTUCCI, Andrea
core   +1 more source

High-laser-wavelength sensitivity of the picosecond ultrasonic response in transparent thin films [PDF]

Physical Review B, 2006
We explore from both the theoretical and experimental points of view the influence of the laser wavelength on the strain pulses detected in thin transparent layers using the picosecond ultrasonic technique. From a theoretical analysis of the displacement detection involved in such experiments, we predict amplitude and sign changes in the detected ...
Devos, Arnaud, Robillard, J.F., Côte, R., Emery, P.   +3 more
openaire   +1 more source

Sound velocity and absorption measurements under high pressure using picosecond ultrasonics in diamond anvil cell. Application to the stability study of AlPdMn [PDF]

, 2007
We report an innovative high pressure method combining the diamond anvil cell device with the technique of picosecond ultrasonics. Such an approach allows to accurately measure sound velocity and attenuation of solids and liquids under pressure of tens ...
B. Perrin, B. Perrin, B. Perrin, C. L. Henley, F. Decremps, G. A. Antonelli, H. K. Mao, L. Belliard, L. D. Landau, M. Gauthier, S. D. Jacobsen   +10 more
core   +3 more sources