Coherence effects in modeling laser-Doppler perfusion flowmetry

Frits F. M. de Mul; Wiendelt Steenbergen; T. Vonck; Jan Greve

doi:10.1117/12.228677

18 December 1995 Coherence effects in modeling laser Doppler perfusion flowmetry

Frits F. M. de Mul, Wiendelt Steenbergen, T. Vonck, Jan Greve

Proceedings Volume 2626, Photon Propagation in Tissues; (1995) https://doi.org/10.1117/12.228677
Event: BiOS Europe '95, 1995, Barcelona, Spain

Abstract

When performing direct-contact laser-Doppler flowmetry on experimental flow models, the power spectra of the detector signal can be obtained by homodyne or by heterodyne detection. Especially with uniformly moving probe particles coherence effects are observed, leading to changes in the width of the power spectrum. Due to destructive interference effects at the detector surface, in the measured homodyne spectra the contribution of relatively high Doppler frequencies is suppressed compared with that of lower frequencies. This results in spectra which are narrower than expected theoretically. This effect allows us to investigate the importance of the relative amount of coherence areas at the surface of the detector.

Citation Download Citation

Frits F. M. de Mul, Wiendelt Steenbergen, T. Vonck, and Jan Greve "Coherence effects in modeling laser Doppler perfusion flowmetry", Proc. SPIE 2626, Photon Propagation in Tissues, (18 December 1995); https://doi.org/10.1117/12.228677

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available