Magnetization of magnetostatic forward volume wave in a YIG-GGG layered structure with application to guided-wave magnetooptic Bragg cell

Author

Pu, Y. ; Tsai, C.S.

Author_Institution

California Univ., Irvine, CA, USA

fYear

1990

fDate

4-7 Dec 1990

Firstpage

213

Abstract

A general expression for the RF magnetization of a magnetostatic forward volume wave (MSFVW) generated by a lift-off spaced microstrip line transducer in a yttrium-iron-garnet-gadolinium (YIG-GGG) layered structure sandwiched between two finite ground planes has been derived. The effects of the RF magnetization on the diffraction efficiency and the bandwidth of guided-wave magnetooptic Bragg cells are studied using numerical computation. For a given microwave drive power, the RF magnetizations exhibit a multiband structure in the carrier frequency domain. Both the maximum magnitude of RF magnetization and the bandwidth are found to depend strongly, on the DC magnetic field and the YIG film thickness

Keywords

gadolinium compounds; garnets; magnetic surface phenomena; magnetic thin films; magnetisation; magneto-optical devices; magneto-optical effects; magnetostatic waves; optical waveguides; yttrium compounds; DC magnetic field; RF magnetization; YFe5O12-GdGa5O12; YIG-GGG layered structure; YIG-GdGG layers; bandwidth; carrier frequency domain; diffraction efficiency; film thickness; guided-wave magnetooptic Bragg cell; lift-off spaced microstrip line transducer; magnetostatic forward volume wave; microwave drive power; multiband structure; Bandwidth; Diffraction; Genetic expression; Magnetization; Magnetooptic effects; Magnetostatic waves; Microstrip; Radio frequency; Transducers; Yttrium;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171355

Filename

171355