Coherent plasmon—surface phonon oscillations in a GaAs Schottky barrier sample

Jong, de W Wim; Etteger, van Af; Hall, van Pj Piet; Rasing, T.H.M.

doi:10.1016/s0039-6028(96)01417-3

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…The size of the signal, which is a consequence of the surface sensitivity of SHG and the localized nature of the electron±phonon interaction, is very encouraging and suggests that this technique could be used to probe electron±pho-non interactions at surfaces and to drive non-thermal surface chemical reactions [50]. In related work, Rasing and co-workers were able to extend their previous study [52] on Schottky barrier plasma oscillations to identify plasma±phonon coupling with both the bulk LO phonon at %37 meV, and a surface phonon at %32 meV [51].…”

Section: Time-resolved Studiesmentioning

confidence: 89%

“…However, studies in the time domain have also been greatly facilitated by this development. For example, direct temporal observation of coherent plasma±phonon oscillations have been reported [50,51]. Tom and co-workers, in a beautiful experiment, identified six such coupled surface modes at the clean GaAs(110) surface, allowing surface phonon energies at the surface " G point to be…”

Section: Time-resolved Studiesmentioning

confidence: 99%

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Optical Second-Harmonic Generation as a Semiconductor Surface and Interface Probe

McGilp

1999

phys. stat. sol. (a)

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Optical second‐harmonic generation, although a sophisticated technique, is making a significant contribution to the characterization of surfaces and interfaces. Advantages include: all pressure ranges being accessible; insulators being studied without the problem of charging effects; solid–solid and solid–liquid interfaces being characterized by utilizing the large penetration depth of optical radiation. Single wavelength studies yield information on the crystallographic and magnetic structure of surfaces and interfaces, and are particularly sensitive to symmetry changes. Spectroscopic and time‐resolved studies, which have recently become simpler due to the availability of high pulse power, tunable, broad band laser sources, additionally provide electronic structure and dynamics information, although interpretation may not be simple. Recent examples from well‐characterized semiconductor interfaces are discussed, and it is shown that the technique is now well understood at the phenomenological level, although theoretical calculations are proving to be difficult.

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Section: Time-resolved Studiesmentioning

confidence: 89%

Section: Time-resolved Studiesmentioning

confidence: 99%

Optical Second-Harmonic Generation as a Semiconductor Surface and Interface Probe

McGilp

1999

phys. stat. sol. (a)

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Coherent phonons in condensed media

Dekorsy¹,

Cho²,

Kurz³

2000

Topics in Applied Physics

139

127

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Abstract. The impulsive excitation and phase-sensitive detection of coherent phonons and phonon-polaritons provide a detailed insight i n to the dynamical properties of matter. The experiments are based on optical pump-probe techniques with femtosecond time resolution. These techniques enable the detection of amplitude and phase of the coherent lattice motion simultaneously. F requencies in the THz range and dephasing times in the picosecond range can be obtained with high accuracy. Especially in semiconductors and semiconductor heterostructures, where a coherent phonon mode and free carriers are excited simultaneously, important information about carrier-phonon interaction far away from equilibrium is obtained. This paper presents an overview of recent a c hievements in this vivid eld of condensed matter physics.

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Ultrafast dynamics control on ablation of Cu using shaped femtosecond pulse trains

Deng

Liu

et al. 2021

Current Applied Physics

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Coherent plasmon—surface phonon oscillations in a GaAs Schottky barrier sample

Cited by 4 publications

References 12 publications

Optical Second-Harmonic Generation as a Semiconductor Surface and Interface Probe

Optical Second-Harmonic Generation as a Semiconductor Surface and Interface Probe

Coherent phonons in condensed media

Ultrafast dynamics control on ablation of Cu using shaped femtosecond pulse trains

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