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22 July 2003 The measurement of optical properties of a multiple scattering medium based on diffused photon pair density wave
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Abstract
A photon pair density wave (PPDW) is initiated and compared with the conventional defused photon density wave (DPDW) to verify its optical properties generated by correlated parallel polarized pair photons propagating in a scattering medium. An optical heterodyne signal is generated by the scattered correlated pair photons in the scattering medium. However, the phase delay of the signal depends upon the beat frequency and the distance between source and detector. This is similar to DPDW at the lower modulated frequency of laser source in frequency domain. Spherical wave fronts of constant attenuated intensity and the phase delay of PPDW are observed in a homogenous scattering medium by using a lock-in amplifier. The assumption that polarized photon pairs propagating as photon density wave in a multiple scattering medium is verified experimentally. Optical properties of PPDW in the scattering medium are demonstrated successfully.
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Yi-Hsin Chan, Chien Chou, Hsiu-Fong Chang, Han-Fai Yau, Jhenq-Syong Wu, and Jen-Chuen Hsieh "The measurement of optical properties of a multiple scattering medium based on diffused photon pair density wave", Proc. SPIE 4958, Advanced Biomedical and Clinical Diagnostic Systems, (22 July 2003); https://doi.org/10.1117/12.477938
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