Ultrasound detection through turbid media

P. Yu, L. Peng, D. D. Nolte, M. R. Melloch

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Optical coherence-domain reflectometry and laser-based ultrasound detection have been combined with the use of adaptive optics to detect ultrasound through turbid media. The dynamic hologram in a photorefractive quantum-well device performs as a coherence gate that eliminates multiply scattered background. Quadrature homodyne detection conditions are selected by the choice of center wavelength of the pulse spectrum, requiring no active stabilization or feedback. A depth resolution of 30 μm was achieved, with a pulse duration of nominally 120 fs for ultrasound detection through turbid media up to optical thicknesses of 11 mean free scattering lengths.

Original languageEnglish (US)
Pages (from-to)819-821
Number of pages3
JournalOptics letters
Issue number10
StatePublished - May 15 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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