14 February 2005 Near-field optical magnetometry and magnetic imaging of nanomagnets
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Proceedings Volume 5776, Eighth International Symposium on Laser Metrology; (2005) https://doi.org/10.1117/12.611624
Event: Eighth International Conference on Laser Metrology, 2005, Merida, Mexico
Abstract
We present an all-optical approach to detecting magnetization reversal events in submicron ferromagnetic structures that is non-perturbative and compatible with ultrafast optical techniques. We demonstrate experimentally that structures much smaller than the wavelength of light can be probed using both near-field and far-field laser techniques combined with a cavity Kerr enhancement technique and two different polarimetry methods. Controlled magnetization reversal events are detected in nickel magnets approaching the 100nm scale. This leads to a promising way to measure sub-picosecond dynamics of nanomagnets for fast device applications.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Naser Qureshi, Aaron R. Hawkins, Holger Schmidt, "Near-field optical magnetometry and magnetic imaging of nanomagnets", Proc. SPIE 5776, Eighth International Symposium on Laser Metrology, (14 February 2005); doi: 10.1117/12.611624; https://doi.org/10.1117/12.611624
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