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Picosecond acoustics in single quantum wells of cubic GaN/(Al,Ga)N

Czerniuk, T.; Ehrlich, T.; Wecker, T.; As, D.J.; Yakovlev, D.R.; Akimov, A.V.; Bayer, M.

Authors

T. Czerniuk

T. Ehrlich

T. Wecker

D.J. As

D.R. Yakovlev

A.V. Akimov

M. Bayer



Abstract

A picosecond acoustic pulse is used to study the photoelastic interaction in single zinc-blende GaN/AlxGa1−xN quantum wells. We use an optical time-resolved pump-probe setup and demonstrate that tuning the photon energy to the quantum well’s lowest electron-hole transition makes the experiment sensitive to the quantum well only. Because of the small width, its temporal and spatial resolution allows us to track the few-picosecond-long transit of the acoustic pulse. We further deploy a model to analyze the unknown photoelastic coupling strength of the quantum well for different photon energies and find good agreement with the experiments.

Citation

Czerniuk, T., Ehrlich, T., Wecker, T., As, D., Yakovlev, D., Akimov, A., & Bayer, M. (2017). Picosecond acoustics in single quantum wells of cubic GaN/(Al,Ga)N. Physical Review Applied, 7(1), Article 014006. https://doi.org/10.1103/PhysRevApplied.7.014006

Journal Article Type Article
Acceptance Date Dec 14, 2016
Publication Date Jan 11, 2017
Deposit Date Mar 28, 2017
Publicly Available Date Mar 28, 2017
Journal Physical Review Applied
Electronic ISSN 2331-7019
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 7
Issue 1
Article Number 014006
DOI https://doi.org/10.1103/PhysRevApplied.7.014006
Public URL https://nottingham-repository.worktribe.com/output/840838
Publisher URL http://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.7.014006

Files

PhysRevApplied.7.014006.pdf (437 Kb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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