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(ω)Eprobe *(ω)|Eprobe(ω)|2. This is much easier to detect than transient grating, photon echo, or four-wave mixing schemes that use higher-order nonlinearities. We have applied this technique to measure the energy gap and dephasing time of the dangling bond interband transition on the GaAs(110)-relaxed (1×1) surface. Surface-carrier/surface-phonon interaction plays an important and perhaps dominant role in surface carrier dephasing consistent with the larger electron-phonon coupling on the surface compared to the bulk.
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Received: 13 October 1998
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Tom, H., Chang, Y. & Kwak, H. Coherent phonon and electron spectroscopy on surfaces using time-resolved second-harmonic generation . Appl Phys B 68, 305–313 (1999). https://doi.org/10.1007/s003400050624
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DOI: https://doi.org/10.1007/s003400050624