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.
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29 June 2015
Research Article|
June 30 2015
Magneto-optical imaging technique for hostile environments: The ghost imaging approach
A. Meda;
A. Meda
INRIM
, Strada delle Cacce 91, I-10135 Torino, Italy
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A. Caprile
;
A. Caprile
INRIM
, Strada delle Cacce 91, I-10135 Torino, Italy
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A. Avella;
A. Avella
INRIM
, Strada delle Cacce 91, I-10135 Torino, Italy
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I. Ruo Berchera;
I. Ruo Berchera
INRIM
, Strada delle Cacce 91, I-10135 Torino, Italy
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I. P. Degiovanni;
I. P. Degiovanni
INRIM
, Strada delle Cacce 91, I-10135 Torino, Italy
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A. Magni;
A. Magni
INRIM
, Strada delle Cacce 91, I-10135 Torino, Italy
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M. Genovese
M. Genovese
INRIM
, Strada delle Cacce 91, I-10135 Torino, Italy
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Appl. Phys. Lett. 106, 262405 (2015)
Article history
Received:
May 12 2015
Accepted:
June 19 2015
Citation
A. Meda, A. Caprile, A. Avella, I. Ruo Berchera, I. P. Degiovanni, A. Magni, M. Genovese; Magneto-optical imaging technique for hostile environments: The ghost imaging approach. Appl. Phys. Lett. 29 June 2015; 106 (26): 262405. https://doi.org/10.1063/1.4923336
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