EXTREMELY HIGH-FREQUENCY PULSE MAGNETIC-RESONANCE BY PICOSECOND MAGNETOOPTIC SAMPLING

被引:33
作者
FREEMAN, MR
BRADY, MJ
SMYTH, J
机构
[1] IBM Thomas J. Watson Research Center, Yorktown Heights
关键词
D O I
10.1063/1.106911
中图分类号
O59 [应用物理学];
学科分类号
摘要
An exceptionally broadband method for pulse magnetic resonance detection is described which enables measurements over a broad range of applied magnetic fields and affords excellent coupling to microscopic specimens. Employing a picosecond magneto-optic sampling technique with high temporal and spatial resolution, the precessing magnetization of a spin system is directly observed as a function of time following a photoconductively triggered spin tipping pulse. Free induction decays from 200 MHz to 200 GHz have been measured using a single device, for which the frequency limit in principle is of order 1 THz. Examples are presented for ferromagnetic resonance in yttrium iron garnet films at room temperature.
引用
收藏
页码:2555 / 2557
页数:3
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