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Single-shot dual-polarization holography: measurement of the polarization state of a magnetic sample
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0003-4853-870X
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0001-8355-2414
Uppsala University.
Vise andre og tillknytning
2015 (engelsk)Inngår i: SPECKLE 2015: VI International Conference on Speckle Metrology / [ed] Fernando Mendoza Santoyo; Eugenio R. Mendez, SPIE - International Society for Optical Engineering, 2015Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In this paper a single-shot digital holographic set-up with two orthogonally polarized reference beams is proposed to achieve rapid acquisition of Magneto-Optical Kerr Effect images. Principles of the method and the background theory for dynamic state of polarization measurement by use of digital holography are presented. This system has no mechanically moving elements or active elements for polarization control and modulation. An object beam is combined with two reference beams at different off-axis angles and is guided to a detector. Then two complex fields (interference terms) representing two orthogonal polarizations are recorded in a single frame simultaneously. Thereafter the complex fields are numerically reconstructed and carrier frequency calibration is done to remove aberrations introduced in multiplexed digital holographic recordings. From the numerical values of amplitude and phase, a real time quantitative analysis of the polarization state is possible by use of Jones vectors. The technique is demonstrated on a magnetic sample that is a lithographically patterned magnetic microstructure consisting of thin permalloy parallel stripes.

sted, utgiver, år, opplag, sider
SPIE - International Society for Optical Engineering, 2015.
Serie
Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X ; 9660
Emneord [en]
Single-shot acquisition, holography, dual-polarization, Magneto-Optical Kerr Effect, polarization, measurement, multiplexed holography
HSV kategori
Forskningsprogram
Experimentell mekanik
Identifikatorer
URN: urn:nbn:se:ltu:diva-34046DOI: 10.1117/12.2189782ISI: 000360300500036Scopus ID: 2-s2.0-84943551779Lokal ID: 82680dae-42a6-4c75-92d6-621694a624d6ISBN: 9781628418781 (tryckt)OAI: oai:DiVA.org:ltu-34046DiVA, id: diva2:1007295
Merknad

Validerad; 2015; Nivå 1; 20150829 (davkho)

Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2022-09-23bibliografisk kontrollert

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Totalt: 251 treff
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