Title :
Non-resonant ultrafast magnetization driven by THz pulses
Author :
Vicario, C. ; Ruchert, C. ; Derlet, P.M. ; Shalaby, M. ; Tudu, B. ; Luning, J. ; Hauri, C.P.
Author_Institution :
Paul Scherrer Inst., SwissFEL, Villigen, Switzerland
Abstract :
Intense terahertz magnetic fields are used to control the magnetization state of ferromagnetic cobalt thin film. The dynamics visualized by magneto optic Kerr effect is non-resonant and take place over sub-picosecond time scale. The observed magnetic response is coherently locked to the THz carrier oscillations.
Keywords :
cobalt; ferromagnetic materials; magnetic fields; magnetic thin film devices; magnetisation; magneto-optical effects; optical Kerr effect; terahertz wave devices; Nonresonant ultrafast magnetization state control; THz carrier oscillations; THz pulses; ferromagnetic cobalt thin film; intense terahertz magnetic fields; magnetic response; magneto optic Kerr effect; subpicosecond time scale; Cobalt; Magnetic field measurement; Magnetic fields; Magnetic resonance; Magnetization; Transient analysis; Visualization;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956060
