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Polarized optical coherence imaging in turbid media by use of a Zeeman laser

机译:使用塞曼激光在浑浊介质中进行偏振光学相干成像

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摘要

A method that uses a Zeeman laser in conjunction with a Glan-Thompson analyzer to image an object in a turbid medium is proposed. A heterodyne signal is generated only when the scattering photons are partially polarized, and the spatial coherence is not seriously degraded after the signal propagates in the turbid medium. A system combining polarization discrimination with optical coherence detection to image the object in a scattering medium is successfully demonstrated. The medium is a solution of polystyrene microspheres measuring 1.072 μm in diameter suspended in distilled water contained in a 10-mm-thick quartz cuvette. The advantages of this optical system, including better selectivity of the weak partially polarized scattering photons and better imaging ability in higher-scattering media, are discussed.
机译:提出了一种使用Zeeman激光器与Glan-Thompson分析仪结合以对浑浊介质中的物体成像的方法。仅当散射光子部分极化时才产生外差信号,并且在信号在浑浊的介质中传播之后,空间相干性不会严重降低。成功演示了将偏振辨别与光学相干检测相结合的系统,以在散射介质中对物体成像。介质是直径为1.072μm的聚苯乙烯微球的溶液,悬浮在10毫米厚石英比色皿中的蒸馏水中。讨论了该光学系统的优点,包括对弱部分偏振散射光子的更好的选择性和在更高散射的介质中更好的成像能力。

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