Title :
Terahertz spectroscopy of ultrafast demagnetization in ferromagnetic iron
Author :
Hilton, D.J. ; Averitt, R.D. ; Meserole, C.A. ; Fisher, G.L. ; Funk, D.J. ; Taylor, A.J.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
We use ultrafast terahertz transmission and emission spectroscopy to study ultrafast demagnetization in ferromagnetic iron. We show that demagnetization proceeds with a 1.7 ps±0.3 ps lifetime in ferromagnetic films at room temperature.
Keywords :
demagnetisation; ferromagnetic materials; high-speed optical techniques; iron; magnetic thin films; submillimetre wave spectra; 293 to 298 K; Fe; ferromagnetic films; ferromagnetic iron; ultrafast demagnetization; ultrafast terahertz emission spectroscopy; ultrafast terahertz transmission spectroscopy; Demagnetization; Electrons; Iron; Magnetic materials; Nonlinear optics; Optical films; Optical pulses; Optical scattering; Spectroscopy; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1548777
