M.R. Freeman, D.D. Awschalom, et al.
Physical Review Letters
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.
M.R. Freeman, D.D. Awschalom, et al.
Physical Review Letters
S. Yuan, E. Lee, et al.
INTERMAG 2002
M.R. Freeman, G. Nunes Jr.
Applied Physics Letters
V. Chandrasekhar, R.A. Webb, et al.
Physical Review Letters