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Practical considerations in photon correlation experiments

机译：光子相关实验的实际考虑

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Obtaining true and beautiful data from any photon correlation experiment demands serious attention to optimizing both the measuring system and experimental conditions. The laser must have sufficient power, be stable under all Likely conditions, and usually be restricted to a single transverse mode. The beam-delivery optics must he carefully designed, built, and verified. The scattering medium must contain a proper concentration of suitably sized scatterers with appropriate characteristics. Surfaces surrounding the point of measurement must not introduce optical noise. Flare reduction in the receiver optics may be improved with ghost analysis, spatial and spectral filtering, and careful choice of stops, baffles, and surface coatings. The photon detector must have adequate speed and sensitivity with suitably low internal correlations and noise. The choice of correlator is crucial. Sometimes the equipment must be small to reach inaccessible places. Performance may be compromised by thermal, mechanical, or electrical instabilities caused by exposure to environmental excesses. Errors may even be introduced by preprocessing hardware and software before proper information is extracted. With so many conditions and potential problems, how does one obtain beautiful data, leading to correct results and enlightening information? That is the focus of our work. (C) 1997 Optical Society of America.
机译：从任何光子相关实验中获得真实，美观的数据需要认真注意优化测量系统和实验条件。激光器必须具有足够的功率，在所有可能的条件下都必须稳定，并且通常仅限于单个横向模式。必须仔细设计，制造和验证光束传输光学器件。散射介质必须包含适当浓度的具有适当特性的适当大小的散射体。测量点周围的表面不得引入光噪声。可以通过重影分析，空间和光谱过滤以及谨慎选择挡块，挡板和表面涂层来改善接收器光学元件的眩光减少。光子检测器必须具有足够的速度和灵敏度，并具有适当低的内部相关性和噪声。相关器的选择至关重要。有时，设备必须很小才能到达无法触及的地方。性能可能会因暴露于环境过度中而导致的热，机械或电气不稳定性而受损。在提取正确的信息之前，预处理硬件和软件甚至可能引入错误。面对如此多的条件和潜在的问题，人们如何获取漂亮的数据，从而获得正确的结果并启发信息？这是我们工作的重点。 （C）1997年美国眼镜学会。

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