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This study presents the first observation of elastic shear waves generated in a bulk soft tissue using a laser beam. In a first set of experiments, we observed that a 532 nm, 200 mJ Nd:YaG  laser beam can induce a shear wave in a soft phantom and that this shear wave was detectable by an ultrasound scanner using speckle-tracking algorithms. In a second set of experiments, we observed a shear waves induced by a laser beam in a chicken breast sample. The results shows the feasability of an elastography method using a laser beam as a shear wave source.