Chang, Y.-M.Y.-M.ChangXu, L.L.XuTom, H.W.K.H.W.K.Tom2020-06-112020-06-11200003010104https://scholars.lib.ntu.edu.tw/handle/123456789/501569Coherent phonon spectroscopy of GaAs surfaces using time-resolved second-harmonic generationjournal article10.1016/S0301-0104(99)00306-7