Properties of a diffused photon-pair density wave in a multiple-scattering medium.
A novel diffused photon-pair density wave (DPPDW) composed of correlated polarized photon pairs at different temporal frequencies and orthogonal linearly polarized states is proposed. A theory of DPPDWs is developed. A DPPDW selected by coherence gating and polarization gating that satisfies the diffusion equation has been verified experimentally. The sensitivity of amplitude and phase detection of the heterodyne signal has been improved by the properties of synchronized detection and common-path propagation of polarized pair photons in a multiple-scattering medium. Both reduced scattering coefficient micro2s' and absorption coefficient micro2alpha of the scattering medium in terms of the measured phase and amplitude of the heterodyne signal have been obtained. The detection sensitivity of micro2s' and micro2alpha and the properties of a DPPDW in a multiple-scattering medium are discussed and analyzed.
Chan
Yi-Hsin
YH
Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
Chou
Chien
C
Wu
Jheng-Syong
JS
Chang
Hsiu-Fong
HF
Yau
Hon-Fai
HF
D004058:Diffusion; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted; D007368:Interferometry / Q000295:instrumentation / Q000379:methods*; D017785:Photons; D012031:Refractometry / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity