PubMed · 5363018
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B Lindström, B Philipson. 1969. Microdensitometer system for microradiography.. https://doi.org/10.1007/bf00309862
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Last week a House panel approved the creation of the National Institute of Biomedical Imaging and Bioengineering (NIBIE) despite pleas from top National Institutes of Health officials that such a move will balkanize research. The bipartisan proposal, which is also backed by Democratic presidential candidate Al Gore, may have enough momentum to sail through Congress by the time it adjourns early next month. Even if it falls short, NIBIE reflects the growing desire of segments of the biomedical community to have their own address on the Bethesda campus.
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We demonstrate time-resolved measurement of optical phase-space distributions as a new probe for investigating the propagation of light in disordered media. Phase-space techniques measure the joint transverse position and momentum distribution of the scattered light, and are sensitive to the spatially varying phase and amplitude of the field. Using this method we investigate light backscattered from a random medium. The measurements indicate that the weakly localized component is a phase conjugate of the incident light field. A new model of backscatter, based on Wigner phase-space distributions, elucidates the spatial and angular behavior of the localized and unlocalized components.