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Single-shot dual-polarization holography: measurement of the polarization state of a magnetic sample
Luleå University of Technology.
Luleå University of Technology.
Luleå University of Technology.
Uppsala University.
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2015 (English)In: SPECKLE 2015: VI International Conference on Speckle Metrology / [ed] Fernando Mendoza Santoyo, Eugenio R. Méndez, 2015, 96601EConference paper, Published paper (Refereed)
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.

Place, publisher, year, edition, pages
2015. 96601E
Series
Proceedings of SPIE, ISSN 0277-786X ; 9660
National Category
Accelerator Physics and Instrumentation Signal Processing Atom and Molecular Physics and Optics
Research subject
Natural Science, Physics
Identifiers
URN: urn:nbn:se:lnu:diva-55812DOI: 10.1117/12.2189782OAI: oai:DiVA.org:lnu-55812DiVA: diva2:956023
Conference
SPECKLE 2015: VI International Conference on Speckle Metrology
Available from: 2016-08-29 Created: 2016-08-29 Last updated: 2016-08-29Bibliographically approved

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Khodadad, Davood
Accelerator Physics and InstrumentationSignal ProcessingAtom and Molecular Physics and Optics

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf