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Photonics, Vol. 11, Pages 100: Improving the Resolution of Correlation Imaging via the Fluctuation Characteristics
Photonics doi: 10.3390/photonics11020100
Authors: Huan Zhao Xiaoqian Wang Chao Gao Zhuo Yu Hong Wang Yu Wang Lidan Gou Zhihai Yao
The resolution is an important factor in evaluating image quality. In general, the resolution of correlation imaging is taken to the full width at half maximum (FWHM) of the point spread function (PSF) produced by the second-order correlation function. In this paper, we show that the resolution of correlation imaging can be improved by the fluctuation characteristic of the second-order correlation function. It is demonstrated both experimentally and theoretically that the resolution of the system can be drastically improved. We also prove that the FWHM of the PSF can be narrowed by 2n by extracting the n-order fluctuation information of the second-order correlation function.
