Share Email Print

Proceedings Paper

Nanoscale coherent acoustic phonon imaging
Author(s): Brian C. Daly; Julien Klein; Theodore B. Norris; Stanley Pau; Donald M. Tennant; Joseph A. Taylor; John E. Bower
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 15 February 2006
PDF: 8 pages
Proc. SPIE 6118, Ultrafast Phenomena in Semiconductors and Nanostructure Materials X, 61180U (15 February 2006); doi: 10.1117/12.640367
Show Author Affiliations
Brian C. Daly, Vassar College (United States)
Julien Klein, Univ. of Michigan (United States)
Theodore B. Norris, Univ. of Michigan (United States)
Stanley Pau, College of Optical Sciences, Univ. of Arizona (United States)
Donald M. Tennant, Bell Labs., Lucent Technologies (United States)
Joseph A. Taylor, Bell Labs., Lucent Technologies (United States)
John E. Bower, Bell Labs., Lucent Technologies (United States)

Published in SPIE Proceedings Vol. 6118:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials X
Kong-Thon Tsen; Jin-Joo Song; Hongxing Jiang, Editor(s)

© SPIE. Terms of Use
Back to Top