Kellock Henri, Setälä Tero, Shirai Tomohiro, Friberg Ari T
Department of Applied Physics, Aalto University, P.O. Box 13500, FI-00076 Aalto, Finland.
J Opt Soc Am A Opt Image Sci Vis. 2012 Nov 1;29(11):2459-68. doi: 10.1364/JOSAA.29.002459.
Classical ghost imaging is a correlation-imaging technique in which the image of the object is found through intensity correlations of light. We analyze three different quality parameters, namely the visibility, the signal-to-noise ratio (SNR), and the contrast-to-noise ratio (CNR), to assess the performance of double- and triple-intensity correlation-imaging setups. The source is a random partially polarized beam of light obeying Gaussian statistics, and the image quality is evaluated as a function of the degree of polarization (DoP). We show that the visibility improves when the DoP and the order of imaging increase, while the SNR behaves oppositely. The CNR is for the most part independent of DoP and the imaging order. The results are important for the development of new imaging devices using partially polarized light.
经典鬼成像技术是一种关联成像技术，通过光的强度关联来获取物体的图像。我们分析了三个不同的质量参数，即可见度、信噪比（SNR）和对比度噪声比（CNR），以评估双强度和三强度关联成像装置的性能。光源是一束服从高斯统计的随机部分偏振光束，图像质量作为偏振度（DoP）的函数进行评估。我们发现，随着DoP和成像阶数的增加，可见度提高，而SNR的表现则相反。CNR在很大程度上与DoP和成像阶数无关。这些结果对于使用部分偏振光的新型成像设备的开发具有重要意义。
