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In a the  context of shear wave elastography, the thermoelastic regime is a priori preferred to over  the ablative regime, as because  it is less destructive. If Muthupillai et al. Even if first shear wave elastography experiments  assumed that a displacement of a few hundreds of hundred  nanometers should would  be sufficientto perform shear wave elastography  \cite{7569924}, displacements of the order of the micrometer a few micrometers  are usually required in practice for  ultrasound or magnetic resonance elastography \cite{Nightingale_2001}, \cite{Manduca_2001}: \cite{Manduca_2001}. Interestingly,  this is higher than the displacement we  observed at 10 mJ (thermoelastic regime) and about regime), but long  the same order of magnitude of the displacement observed  at 200 mJ (ablative regime). The minimum energy (10 mJ) of the laser beam used in our experiments is incidentally 2.5 times above the maximumexposure  permissible exposure  for skin given by the Z136.1-2007 standard of the American National Standard Institute \cite{ANSIZ1361}. Ina  practical application in applications to  the human body, different strategies could be adopted to comply to ANSI standard: observe standard:, including observation of  the medium with a  high resolution imaging technique, technique that is  able to track displacements of a few nanometers, like such as  high frequency (100 MHz) ultrasound imaging, imaging  or optical coherence tomography \cite{Li_2011}; one can also emit \cite{Li_2011}. Alternatively,  the laser beam on can be emitted onto  a protective absorbing layer, for example such as  a black sheet sticked to covering  the patient organ patient's organs  \cite{Li_2014}. In conclusion, we have presented experimental observationsin soft medium  of elastic shear waves generated by a laser beam. beam in a soft medium.  The involved phenomenons phenomena  were investigated investigated,  and we distinguished revealed the existence of  thermoelastic and ablative regimes. Theoretical Furthermore, theoretical  displacements were in good agreement to with  experimental measurements. Numerical Lastly, numerical  studies showedcomparable  displacement propagation patterns as experimental ones. that were comparable to those generated experimentally.  The authors would like to thank Damien Garcia for lending the laser device and device,  Simon Bernard for his help in with  Matlab coding. coding and Christine Tam for language corrections.  Pol Grasland-Mongrain received a CRSNG post-doctoral grant. The authors declare no conflict of interest in the work presented here.