Creating traveling waves from standing waves from the gyrotropic paramagnetic properties of Fe3+ ions in a high-Q whispering gallery mode sapphire resonator

被引:21
作者
Benmessai, Karim [1 ]
Tobar, Michael Edmund [1 ]
Bazin, Nicholas [2 ]
Bourgeois, Pierre-Yves [2 ]
Kersale, Yann [2 ]
Giordano, Vincent [2 ]
机构
[1] Univ Western Australia, Sch Phys M013, Crawley, WA 6009, Australia
[2] Univ Franche Comte, Inst FEMTO ST, CNRS, UMR 6174, F-25044 Besancon, France
关键词
crystal resonators; iron; magnetic susceptibility; optical resonators; optical rotation; paramagnetic resonance; sapphire; whispering gallery modes; FREQUENCY-TEMPERATURE COMPENSATION; COMPLEX PERMITTIVITY; DOPED SAPPHIRE; SUSCEPTIBILITY;
D O I
10.1103/PhysRevB.79.174432
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report observations of the gyrotropic change in magnetic susceptibility of the Fe3+ electron paramagnetic resonance at 12.037 GHz (between spin states parallel to 1/2 > and parallel to 3/2 >) in sapphire with respect to the applied magnetic field. Measurements were made by observing the response of the high-Q whispering gallery doublet in a Hemex sapphire resonator cooled to 5 K. The doublets initially existed as standing waves at zero field and were transformed to traveling waves due to the gyrotropic response.
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页数:8
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