Two-wave mixing in photorefractive media removes mechanical vibrations and laser speckle during laser-based ultrasound detection. We demonstrate that photorefractive quantum wells always provide the condition for maximum linear homodyne sensitivity (also known as quadrature) because of the resonant dielectric response of the quantum-confined excitons. The dispersion of the excitonic absorption provides an excitonic spectral phase that is directly accessible by tuning the detection wavelength.

© 1999 Optical Society of America

PDF Article
More Like This
Laser-based ultrasound with linear detection in photorefractive multiple quantum wells

I. Lahiri, L.J. Pyrak-Nolte, D.D. Nolte, M.R. Melloch, G.D. Bacher, and M.B. Klein
CFI2 Conference on Lasers and Electro-Optics (CLEO) 1998

Homodyne Detection of Ultrasound Through Turbid Media Using an Adaptive Interferometer

P. Yu, D. D. Nolte, and M. R. Melloch
290 Photorefractive Effects, Materials, and Devices (PEMD) 2001

Coherence-gated ultrasound detection through turbid medium

P. Yu, D.D. Nolte, and M.R. Melloch
CThX3 Conference on Lasers and Electro-Optics (CLEO) 2001


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription