META 2021, META'12

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Maximizing light field enhancement at nano-scale for magnetic data storage
Haifeng Wang, Chin Seong Lim, Danqing Wang

Last modified: 2011-12-20


The future 10 terabit per square inch magnetic data storage needs to use a light spot size of about 10 nm to warm up the recording media during magnetic writing. The only way to generate such nanometer light spot is to use optical antennas. However, when light is localized to such small scale, the optical efficiency is extremely low, usually below 1%, which makes it very difficult to transfer enough energy to warm up the disk for magnetic writing. This talk will center on the optical antenna design for efficient energy delivery and field localization for magnetic data storage.