Quadratic magnetooptic spectroscopy setup based on photoelastic light modulation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F18%3A10240002" target="_blank" >RIV/61989100:27640/18:10240002 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/18:10240002 RIV/00216208:11320/18:10387807
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1569441017303693?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1569441017303693?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.photonics.2018.05.007" target="_blank" >10.1016/j.photonics.2018.05.007</a>
Alternative languages
Result language
angličtina
Original language name
Quadratic magnetooptic spectroscopy setup based on photoelastic light modulation
Original language description
In most of the cases the magnetooptic Kerr effect (MOKE) techniques rely solely on the effects linear in magnetization (M). Nevertheless, a higher-order term being proportional to M-2 and called quadratic MOKE (QMOKE) can additionally contribute to experimental data. Handling and understanding the underlying origin of QMOKE could be the key to utilize this effect for investigation of antiferromagnetic materials in the future due to their vanishing first order MOKE contribution. Also, better understanding of QMOKE and hence better understanding of magnetooptic (MO) effects in general is very valuable, as the MO effect is very much employed in research of ferro- and ferrimagnetic materials. Therefore, we present our QMOKE and longitudinal MOKE spectroscopy setup with a spectral range of 0.8-5.5 eV. The setup is based on light modulation through a photoelastic modulator and detection of second-harmonic intensity by a lock-in amplifier. To measure the Kerr ellipticity an achromatic compensator is used within the setup, whereas without it Kerr rotation is measured. The separation of QMOKE spectra directly from the measured data is based on measurements with multiple magnetization directions. So far the QMOKE separation algorithm is developed and tested for but not limited to cubic (001) oriented samples. The QMOKE spectra yielded by our setup arise from two quadratic MO parameters G(s) and 2G(44), being elements of quadratic MO tensor G, which describes perturbation of the permittivity tensor in the second order in M.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Photonics and Nanostructures - Fundamentals and Applications
ISSN
1569-4410
e-ISSN
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Volume of the periodical
31
Issue of the periodical within the volume
Kveten
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
6
Pages from-to
60-65
UT code for WoS article
000445716900008
EID of the result in the Scopus database
2-s2.0-85047795539