Optical imaging through inhomogeneous media based on autocorrelations suffers from a limited field of view (FOV), since the optical memory effect (ME) of a scattering medium has its inherent angular extent. Here we successfully expand the angular ME range by exploiting a spatial filtering technique to select low-frequency components, mainly ballistic light and less scattered light, thereby increasing the FOV of the speckle autocorrelation imaging. Both a simulation and experimental verifications are presented. This technique, which is not limited to the discussed 4f structure, can provide a guideline for the design of an optical system to image through scattering media.
© 2019 Optical Society of AmericaFull Article | PDF Article
26 March 2020: A typographical correction was made to the affiliations.
More Like This
Xiaoyu Wang, Xin Jin, Junqi Li, Xiaocong Lian, Xiangyang Ji, and Qionghai Dai
Opt. Lett. 44(6) 1423-1426 (2019)
Yuka Okamoto, Ryoichi Horisaki, and Jun Tanida
Opt. Lett. 44(10) 2526-2529 (2019)
Ofer Salhov, Gil Weinberg, and Ori Katz
Opt. Lett. 43(22) 5528-5531 (2018)