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Investigation of Fresnel rhomb
Jesenská, Eva ; Němec, Petr (advisor) ; Jakubisová, Eva (referee)
This bachelor thesis is devoted to the investigation of the polarization propertis of the Fresnel rhomb. First of all, we was interested in the quality of the polarized light which can be created using the Fresnel rhomb. In particular, we were checking the accuracy of the circular and linear polarization which is produced by Fresnel rhomb. Secondly, we tested the wavelength dependence of the quality of polarized light. We also investigated the dependence of the polarization state on the light angle of incidence. Finally, we compared the obtained results with those for the wave plates.
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Laser spectroscopy of materials for spintronics
Brajer, Martin ; Němec, Petr (advisor) ; Jakubisová, Eva (referee)
In these diploma thesis magnetically ordered materials are studied with the prospect of their application in spintronics. Specifically, we investigated metallic alloy FeRh, which undergoes a magnetic phase transition from antife- romagnetic phase to feromagnetic one around 100◦ C. This phenomenon can be readily used in memory devices. Laser spectroscopy is used as a nondestructive method without need of any electrical contacts. Magnetic properties of FeRh are studied by magnetooptical effects including quadratic magnetic linear dichroism. The measured polarization rotations are of the order of miliradians, therefore, the detection is realized by an optical bridge. At first, we concentrated on discrimina- ting of various magnetooptical effects from each other. The second part is focused on the phase transition induced by different means. Firstly, by heating the whole sample, secondly by illuminating the sample locally by continuous laser.
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Investigation of Fresnel rhomb
Jesenská, Eva ; Němec, Petr (advisor) ; Jakubisová, Eva (referee)
This bachelor thesis is devoted to the investigation of the polarization propertis of the Fresnel rhomb. First of all, we was interested in the quality of the polarized light which can be created using the Fresnel rhomb. In particular, we were checking the accuracy of the circular and linear polarization which is produced by Fresnel rhomb. Secondly, we tested the wavelength dependence of the quality of polarized light. We also investigated the dependence of the polarization state on the light angle of incidence. Finally, we compared the obtained results with those for the wave plates.
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