Spatially resolved microwave field distribution in YBaCuO disk resonators visualized by laser scanning

被引：22

作者：

Kaiser, T ^{[1
]}

Hein, MA ^{[1
]}

Müller, G ^{[1
]}

Perpeet, M ^{[1
]}

机构：

[1] Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 23期

关键词：

D O I：

10.1063/1.122792

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The applicability of superconducting films in high-performance microwave devices suffers from inhomogeneous growth and local defects. Therefore we have installed a laser scanning system to visualize with spatial resolution the distribution of the microwave fields in 2-in.-diam YBaCuO disk resonators. The TM310 mode was imaged at a loaded quality factor of 8.3 x 10(4) via changes of the resonant frequency at 2.21 GHz and 40 K. The field distribution agreed with a magnetic-wall model, indicating at the contour of the disk fringe fields, but without strong edge enhancement. The data also indicated an inhomogeneous effective microwave penetration depth. The spatial resolution is presently limited to about 2 mm by heat diffusion. (C) 1998 American Institute of Physics. [S0003-6951(98)02449-8].

引用

页码：3447 / 3449

页数：3

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