Publication
Applied Physics Letters
Paper

Sound velocity and index of refraction of AlAs measured by picosecond ultrasonics

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Abstract

We use picosecond optics techniques to generate and detect acoustic pulses in an epitaxially grown film of AlAs. From the round trip time of the acoustic pulse we find a sound velocity in the [100] direction of 6.4×10 5 cm s-1. We also show how measurements of this type can be used to determine the refractive index.

Date

01 Jan 1988

Publication

Applied Physics Letters

Authors

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