2015/04/30 by A. Meda, A. Caprile, A. Avella +4 · 3 citations
Engineering · Physics and Astronomy · #Dimension (graph theory) #Domain (mathematical analysis) #Faraday cage #Faraday effect #Ghost imaging #Imaging technique #Magnetic domain #Magnetic field #Magneto-Optical Properties and Applications #Near-Field Optical Microscopy #Random lasers and scattering media #Remanence #physics.optics #quant-ph
paper · pdf · doi:10.1063/1.4923336
published as Appl. Phys. Lett. 106, 262405 (2015)
openalex publication_date 2015/06/29 · arxiv created 2015/07/09 · arxiv updated 2015/07/13 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
In this paper, we develop an approach to magneto optical imaging (MOI), applying a ghost imaging (GI) protocol to perform Faraday microscopy. MOI is of the utmost importance for the investigation of magnetic properties of material samples, through Weiss domains shape, dimension and dynamics analysis. Nevertheless, in some extreme conditions such as cryogenic temperatures or high magnetic field applications, there exists a lack of domain images due to the difficulty in creating an efficient imaging system in such environments. Here, we present an innovative MOI technique that separates the imaging optical path from the one illuminating the object. The technique is based on thermal light GI and exploits correlations between light beams to retrieve the image of magnetic domains. As a proof of principle, the proposed technique is applied to the Faraday magneto-optical observation of the remanence domain structure of an yttrium iron garnet sample.