Nanoscale coherent acoustic phonon imaging

Brian C. Daly, Julien Klein, Theodore B. Norris, Stanley K H Pau, Donald M. Tennant, Joseph A. Taylor, John E. Bower

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

An ultrafast optical pump and probe technique known as picosecond ultrasonics is used to generate and detect coherent acoustic phonon pulses in nanostructured films grown on Si wafers. By detecting the phonons after they have diffracted across a millimeter thick wafer, it is possible to measure the scattered phonons in the acoustic far field. Numerical backpropagation algorithms can then be used in order to reconstruct the object which scattered the acoustic phonon pulses. We describe measurements and simulations of experiments performed on surface and sub-surface nanostructures. Results with ∼500 nm image resolution are shown, and plans for improving that resolution by an order of magnitude will be described.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6118
DOIs
StatePublished - 2006
EventUltrafast Phenomena in Semiconductors and Nanostructure Materials X - San Jose, CA, United States
Duration: Jan 23 2006Jan 25 2006

Other

OtherUltrafast Phenomena in Semiconductors and Nanostructure Materials X
CountryUnited States
CitySan Jose, CA
Period1/23/061/25/06

Fingerprint

Phonons
Acoustics
Imaging techniques
acoustics
Backpropagation algorithms
Acoustic fields
phonons
Image resolution
wafers
Nanostructures
Ultrasonics
image resolution
Pumps
pulses
far fields
ultrasonics
pumps
probes
Experiments
simulation

Keywords

  • Acoustic phonons
  • Coherent phonons
  • Nanoscale imaging
  • Nanostructures
  • Picosecond ultrasonics
  • Pump-probe spectroscopy
  • Thin films
  • Time-domain spectroscopy
  • Ultrafast optics
  • Ultrasound

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Daly, B. C., Klein, J., Norris, T. B., Pau, S. K. H., Tennant, D. M., Taylor, J. A., & Bower, J. E. (2006). Nanoscale coherent acoustic phonon imaging. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6118). [61180U] https://doi.org/10.1117/12.640367

Nanoscale coherent acoustic phonon imaging. / Daly, Brian C.; Klein, Julien; Norris, Theodore B.; Pau, Stanley K H; Tennant, Donald M.; Taylor, Joseph A.; Bower, John E.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6118 2006. 61180U.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Daly, BC, Klein, J, Norris, TB, Pau, SKH, Tennant, DM, Taylor, JA & Bower, JE 2006, Nanoscale coherent acoustic phonon imaging. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6118, 61180U, Ultrafast Phenomena in Semiconductors and Nanostructure Materials X, San Jose, CA, United States, 1/23/06. https://doi.org/10.1117/12.640367
Daly BC, Klein J, Norris TB, Pau SKH, Tennant DM, Taylor JA et al. Nanoscale coherent acoustic phonon imaging. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6118. 2006. 61180U https://doi.org/10.1117/12.640367
Daly, Brian C. ; Klein, Julien ; Norris, Theodore B. ; Pau, Stanley K H ; Tennant, Donald M. ; Taylor, Joseph A. ; Bower, John E. / Nanoscale coherent acoustic phonon imaging. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6118 2006.
@inproceedings{3cc3137896214f7b959ece047c7f45b2,
title = "Nanoscale coherent acoustic phonon imaging",
abstract = "An ultrafast optical pump and probe technique known as picosecond ultrasonics is used to generate and detect coherent acoustic phonon pulses in nanostructured films grown on Si wafers. By detecting the phonons after they have diffracted across a millimeter thick wafer, it is possible to measure the scattered phonons in the acoustic far field. Numerical backpropagation algorithms can then be used in order to reconstruct the object which scattered the acoustic phonon pulses. We describe measurements and simulations of experiments performed on surface and sub-surface nanostructures. Results with ∼500 nm image resolution are shown, and plans for improving that resolution by an order of magnitude will be described.",
keywords = "Acoustic phonons, Coherent phonons, Nanoscale imaging, Nanostructures, Picosecond ultrasonics, Pump-probe spectroscopy, Thin films, Time-domain spectroscopy, Ultrafast optics, Ultrasound",
author = "Daly, {Brian C.} and Julien Klein and Norris, {Theodore B.} and Pau, {Stanley K H} and Tennant, {Donald M.} and Taylor, {Joseph A.} and Bower, {John E.}",
year = "2006",
doi = "10.1117/12.640367",
language = "English (US)",
isbn = "0819461601",
volume = "6118",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Nanoscale coherent acoustic phonon imaging

AU - Daly, Brian C.

AU - Klein, Julien

AU - Norris, Theodore B.

AU - Pau, Stanley K H

AU - Tennant, Donald M.

AU - Taylor, Joseph A.

AU - Bower, John E.

PY - 2006

Y1 - 2006

N2 - An ultrafast optical pump and probe technique known as picosecond ultrasonics is used to generate and detect coherent acoustic phonon pulses in nanostructured films grown on Si wafers. By detecting the phonons after they have diffracted across a millimeter thick wafer, it is possible to measure the scattered phonons in the acoustic far field. Numerical backpropagation algorithms can then be used in order to reconstruct the object which scattered the acoustic phonon pulses. We describe measurements and simulations of experiments performed on surface and sub-surface nanostructures. Results with ∼500 nm image resolution are shown, and plans for improving that resolution by an order of magnitude will be described.

AB - An ultrafast optical pump and probe technique known as picosecond ultrasonics is used to generate and detect coherent acoustic phonon pulses in nanostructured films grown on Si wafers. By detecting the phonons after they have diffracted across a millimeter thick wafer, it is possible to measure the scattered phonons in the acoustic far field. Numerical backpropagation algorithms can then be used in order to reconstruct the object which scattered the acoustic phonon pulses. We describe measurements and simulations of experiments performed on surface and sub-surface nanostructures. Results with ∼500 nm image resolution are shown, and plans for improving that resolution by an order of magnitude will be described.

KW - Acoustic phonons

KW - Coherent phonons

KW - Nanoscale imaging

KW - Nanostructures

KW - Picosecond ultrasonics

KW - Pump-probe spectroscopy

KW - Thin films

KW - Time-domain spectroscopy

KW - Ultrafast optics

KW - Ultrasound

UR - http://www.scopus.com/inward/record.url?scp=33646686621&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646686621&partnerID=8YFLogxK

U2 - 10.1117/12.640367

DO - 10.1117/12.640367

M3 - Conference contribution

AN - SCOPUS:33646686621

SN - 0819461601

SN - 9780819461605

VL - 6118

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -