Phonon spectroscopy with chirped shear and compressive acoustic pulses
Picosecond duration compressive and shear phonon wave packets injected into (311) GaAs slabs transform after propagation through ∼1 mm into chirped acoustic pulses with a frequency increasing in time due to phonon dispersion. By probing the temporal optical response to coherent phonons in a near su...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/48213/ |
| _version_ | 1848797715898564608 |
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| author | Poyser, Caroline Louise York, W.B. Srikanthreddy, D. Glavin, B.A. Linnik, T.L. Campion, R.P. Akimov, A.V. Kent, A.J. |
| author_facet | Poyser, Caroline Louise York, W.B. Srikanthreddy, D. Glavin, B.A. Linnik, T.L. Campion, R.P. Akimov, A.V. Kent, A.J. |
| author_sort | Poyser, Caroline Louise |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Picosecond duration compressive and shear phonon wave packets injected into (311) GaAs slabs transform after propagation through ∼1 mm into chirped acoustic pulses with a frequency increasing in time due to phonon dispersion. By probing the temporal optical response to coherent phonons in a near surface layer of the GaAs slab, we show that phonon chirping opens a transformational route for high-sensitivity terahertz and subterahertz phonon spectroscopy. Temporal gating of the chirped phonon pulse allows the selection of a narrow band phonon spectrum with a central frequency up to 0.4 THz for longitudinal and 0.2 THz for transverse phonons. |
| first_indexed | 2025-11-14T20:08:17Z |
| format | Article |
| id | nottingham-48213 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:08:17Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-482132018-01-19T05:14:11Z https://eprints.nottingham.ac.uk/48213/ Phonon spectroscopy with chirped shear and compressive acoustic pulses Poyser, Caroline Louise York, W.B. Srikanthreddy, D. Glavin, B.A. Linnik, T.L. Campion, R.P. Akimov, A.V. Kent, A.J. Picosecond duration compressive and shear phonon wave packets injected into (311) GaAs slabs transform after propagation through ∼1 mm into chirped acoustic pulses with a frequency increasing in time due to phonon dispersion. By probing the temporal optical response to coherent phonons in a near surface layer of the GaAs slab, we show that phonon chirping opens a transformational route for high-sensitivity terahertz and subterahertz phonon spectroscopy. Temporal gating of the chirped phonon pulse allows the selection of a narrow band phonon spectrum with a central frequency up to 0.4 THz for longitudinal and 0.2 THz for transverse phonons. American Physical Society 2017-12-22 Article PeerReviewed application/pdf en cc_by https://eprints.nottingham.ac.uk/48213/9/PhysRevLett.119.255502.pdf Poyser, Caroline Louise, York, W.B., Srikanthreddy, D., Glavin, B.A., Linnik, T.L., Campion, R.P., Akimov, A.V. and Kent, A.J. (2017) Phonon spectroscopy with chirped shear and compressive acoustic pulses. Physical Review Letters, 119 . 255502/1-255502/5. ISSN 1079-7114 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.255502 doi:10.1103/PhysRevLett.119.255502 doi:10.1103/PhysRevLett.119.255502 |
| spellingShingle | Poyser, Caroline Louise York, W.B. Srikanthreddy, D. Glavin, B.A. Linnik, T.L. Campion, R.P. Akimov, A.V. Kent, A.J. Phonon spectroscopy with chirped shear and compressive acoustic pulses |
| title | Phonon spectroscopy with chirped shear and compressive acoustic pulses |
| title_full | Phonon spectroscopy with chirped shear and compressive acoustic pulses |
| title_fullStr | Phonon spectroscopy with chirped shear and compressive acoustic pulses |
| title_full_unstemmed | Phonon spectroscopy with chirped shear and compressive acoustic pulses |
| title_short | Phonon spectroscopy with chirped shear and compressive acoustic pulses |
| title_sort | phonon spectroscopy with chirped shear and compressive acoustic pulses |
| url | https://eprints.nottingham.ac.uk/48213/ https://eprints.nottingham.ac.uk/48213/ https://eprints.nottingham.ac.uk/48213/ |