5 research outputs found

    Coherence And Polarization Properties Of Far-Fields Generated By Quasi-Homogeneous Electromagnetic Sources

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    The concept of a scalar quasi-homogeneous source is generalized to electromagnetic theory and coherence and polarization properties of the far-field, generated by such a source are discussed. The results are applied to spatial light modulators. © 2005 Optical Society of America

    Coherence And Polarization Properties Of Far Fields Generated By Quasi-Homogeneous Planar Electromagnetic Sources

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    In studies of radiation from partially coherent sources the so-called quasi-homogeneous (QH) model sources have been very useful, for instance in elucidating the behavior of fields produced by thermal sources. The analysis of the fields generated by such sources has, however, been largely carried out in the framework of scalar wave theory. In this paper we generalize the concept of the QH source to the domain of the electromagnetic theory, and we derive expressions for the elements of the cross-spectral density matrix, for the spectral density, the spectral degree of coherence, the degree of polarization, and the Stokes parameters of the far field generated by planar QH sources of uniform states of polarization. We then derive reciprocity relations analogous to those familiar in connection with the QH scalar sources. We illustrate the results by determining the properties of the far field produced by transmission of an electromagnetic beam through a system of spatial light modulators. © 2005 Optical Society of America

    Synthetic aperture imaging polarimeter

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    There is a strong need for the ability to terrestrially image resident space objects (RSOs) and other low earth orbit (LEO) objects for Space Situational Awareness (SSA) applications. The Synthetic Aperture Imaging Polarimeter (SAIP) investigates an alternative means for imaging an object in LEO illuminated by laser radiation. A prototype array consisting of 36 division of amplitude polarimeters was built and tested. The design, assembly procedure, calibration data and test results are presented. All 36 polarimeters were calibrated to a high degree of accuracy. Pupil plane imaging tests were performed in by using cross-correlation image reconstruction algorithm to determine the prototype functionality. © 2010 SPIE

    Metalloproteins Containing Cytochrome, Iron–Sulfur, or Copper Redox Centers

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