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首页> 外文期刊>Applied optics >IMAGE QUALITY IN TIME-RESOLVED TRANSILLUMINATION OF HIGHLY SCATTERING MEDIA
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IMAGE QUALITY IN TIME-RESOLVED TRANSILLUMINATION OF HIGHLY SCATTERING MEDIA

机译：高散射介质的时间分辨透射中的图像质量

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Using a photon-counting setup and a streak-camera arrangement with time resolutions of 35 and 6 ps, respectively, we have investigated the spatial resolution of a time-gated transillumination technique applied to turbid media. In the case of large relative amounts of unscattered light, it is found that small detection angles improve the spatial resolution. For large concentrations of scatterers and large sample thicknesses, i.e., when the amount of unscattered light is negligible, the best time-gate position is found to be at times that are later than the minimum transit time. In this case (minimum transit time), temporal resolutions from small values up to approximately 50 ps yield almost the same image resolution. The only advantage of measuring systems with a higher than 50-ps temporal resolution is their ability to distinguish the diffused from the unscattered light, when a significant amount of the latter is present. [References: 22]
机译：使用分别具有35 ps和6 ps的时间分辨率的光子计数设置和条纹相机布置，我们研究了应用于混浊介质的时间门控透射照明技术的空间分辨率。发现在相对大量的未散射光的情况下，较小的检测角度可改善空间分辨率。对于较大浓度的散射体和较大的样品厚度，即，当未散射的光量可以忽略不计时，发现最佳时间门位置有时要晚于最小通过时间。在这种情况下（最小传输时间），从小值到大约50 ps的时间分辨率会产生几乎相同的图像分辨率。时间分辨率高于50 ps的测量系统的唯一优势是，当存在大量未散射光时，它们能够将散射光与未散射光区分开。 [参考：22]

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