Title :
Stroboscopic observation of high speed VBL motion using an optical sampling system
Author :
Heyes, N. ; Ronan, G. ; Clegg, W.
Author_Institution :
Dept. of Electr. Eng., Manchester Univ., UK
fDate :
3/1/1988 12:00:00 AM
Abstract :
A pulsed flowing N2 laser pumping a rhodamine 6G recirculating dye laser has been used to observe repetitive vertical Bloch line (VBL) motion stroboscopically at speeds in excess of 40 m/s. VBL displacement during the drive pulse is seen to be highly linear and no indication of overshoot has been found. Velocity breakdown at high drive fields has been observed and a model to explain this is presented. Observation is made of the VBL instantaneous position during high-speed motion to find how the velocity varies with the driving forces acting on the VBL.
Keywords :
laser beam effects; magnetic domain walls; magneto-optical effects; high drive fields; optical sampling system; pulsed flowing N2 laser pumping; repetitive vertical Bloch line motion; rhodamine 6G recirculating dye laser; stroboscopic observations; velocity breakdown; Cameras; Coils; Conductors; Fiber lasers; High speed optical techniques; Hip; Microscopy; Optical fiber polarization; Optical pulses; Sampling methods;
Journal_Title :
Magnetics, IEEE Transactions on
