Enhancement of waves at rotational oscillations of a liquid |
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Authors: | D Yu Zhilenko O E Krivonosova |
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Institution: | 1.Institute of Mechanics,Moscow State University,Moscow,Russia |
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Abstract: | The generation of coherent optical phonons in an antimony film has been directly observed by the femtosecond electron diffraction method. The sample has been excited by a femtosecond laser pulse (λ = 800 nm) and probed with a pulsed photoelectron beam. Oscillations of the intensity corresponding to vibration frequencies of optical phonons excited by the laser have been observed in the obtained diffraction patterns: totally symmetric (A1g) and twofold degenerate (E2g) phonon modes of antimony and their combinations. |
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