Observation of Coherent Surface Optical Phonons by Time-Resolved Second-Harmonic Generation (SHG)

Li Xu; Yuming Chang; Harry W.K. Tom

doi:10.1364/UP.1994.PD.6

Ultrafast Phenomena
Technical Digest Series (Optica Publishing Group, 1994),
paper PD.6
•https://doi.org/10.1364/UP.1994.PD.6

Observation of Coherent Surface Optical Phonons by Time-Resolved Second-Harmonic Generation (SHG)

Li Xu, Yuming Chang, and Harry W.K. Tom

International Conference on Ultrafast Phenomena 1994

California United States
2–6 May 1994
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L. Xu, Y. Chang, and H. W. K. Tom, "Observation of Coherent Surface Optical Phonons by Time-Resolved Second-Harmonic Generation (SHG)," in Ultrafast Phenomena, Technical Digest Series (Optica Publishing Group, 1994), paper PD.6.

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Abstract

We report the first observation of coherent surface optical phonons. Time-resolved SHG from laser-excited GaAs (100) is modulated at 10.5 THz which is assigned to a surface phonon.

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