Millimeter-wave magnetooptics: New method for characterization of ferrites in the millimeter-wave range

被引：51

作者：

Kocharyan, KN ^{[1
]}

Afsar, MN ^{[1
]}

Tkachov, II ^{[1
]}

机构：

[1] Tufts Univ, Dept Elect Engn & Comp Sci, Medford, MA 02155 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1999年 / 47卷 / 12期

关键词：

dielectric permittivity; hard ferrites; magnetooptical effects; magnetic permeability; millimeter waves; soft ferrites;

D O I：

10.1109/22.809018

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a new free-space millimeter-wave method based on the transverse magnetooptical effect, which provides the complete and accurate characterization of the ferrites for the first time in the millimeter-wave range. The described data analysis and processing methods lead to the separation of dielectric and magnetic effects and to the simultaneous determination of both millimeter-wave permittivity and permeability. It is demonstrated that this new method can be used for the characterization df the soft ferrites as well as the hard anisotropic ferrites, The magnetooptical measurements were realized using a millimeter-wave spectrometer combined with the electromagnet providing the transverse magnetic field up to 1 T. The backward-wave oscillators were used as a source of tunable coherent millimeter-wave radiation, It was shown that the free-space method applying the polarized Gaussian beams generates precise transmission data and enables the accurate determination of the optical constants of ferrites in the entire millimeter-wave range.

引用

页码：2636 / 2643

页数：8

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