Expansion of the FOV in speckle autocorrelation imaging by spatial filtering

Meijun Chen, Honglin Liu, Zhentao Liu, Puxiang Lai, Shensheng Han

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5997-6000
Number of pages4
JournalOptics Letters
Volume44
Issue number24
DOIs
Publication statusPublished - 15 Dec 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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