研究目的
Investigating the efficiency evaluation of the transverse magneto-optical Kerr effect in magnetoplasmonic structures.
研究成果
The study demonstrates that the Figure of Merit (FOM) parameter can provide more comprehensive information than the relative value of TMOKE for evaluating the efficiency of magnetoplasmonic structures. It emphasizes the importance of considering both light intensity and its change for practical device development.
研究不足
The main limiting factor for TMOKE being applied is a low magnitude of this effect. The study highlights the importance of considering both the change in light intensity and the absolute value of light intensity for practical applications.
1：Experimental Design and Method Selection:
The study introduces the Figure of Merit (FOM) parameter for evaluating the efficiency of the transverse magneto-optical Kerr effect (TMOKE) in magnetoplasmonic structures. The methodology involves calculating the FOM as the product of the reflected/transmitted light intensity and the Kerr signal of the structure.
2：Sample Selection and Data Sources:
The study uses magnetoplasmonic structures with thin magnetite films covered with a periodic array of gold nanostripes. Parameters include Fe3O4 film thickness, grating period, gold stripe widths, and gold thickness.
3：List of Experimental Equipment and Materials:
The study involves optical spectra analysis with parameters derived from the dielectric tensor of magnetized films and optical constants for gold.
4：Experimental Procedures and Operational Workflow:
The impact of the magnetic field on the optical spectra is accounted for by means of a non-diagonal dielectric tensor. Spectral dependencies for the dielectric permittivity and gyration for magnetite are considered.
5：Data Analysis Methods:
The study analyzes transmission and TMOKE spectra to evaluate the FOM parameter's effectiveness compared to the relative value of TMOKE.
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