Near-Field Optical Transducer for Heat-Assisted Magnetic Recording for Beyond-10-Tbit/in2 Densities

2008 ◽  
Vol 3 (1) ◽  
pp. 44-54 ◽  
Author(s):  
R. Ikkawi ◽  
N. Amos ◽  
A. Lavrenov ◽  
A. Krichevsky ◽  
D. Teweldebrhan ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Near Field ◽  
Heat Assisted Magnetic Recording ◽  
Optical Transducer

Efficiency Analysis of Near Field Optical Transducer Used in Heat-Assisted Magnetic Recording

2013 ◽  
Vol 49 (7) ◽  
pp. 3580-3583 ◽  
Author(s):  
Baoxi Xu ◽  
Zhanhong Cen ◽  
Yeow Teck Toh ◽  
Jianming Li ◽  
Kaidong Ye ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Near Field ◽  
Efficiency Analysis ◽  
Heat Assisted Magnetic Recording ◽  
Optical Transducer

scholarly journals Novel droplet near-field transducer for heat-assisted magnetic recording

Nanophotonics ◽  
2015 ◽  
Vol 4 (4) ◽  
pp. 503-510 ◽  
Author(s):  
Jacek Gosciniak ◽  
Marcus Mooney ◽  
Mark Gubbins ◽  
Brian Corbett
Keyword(s):  
Surface Plasmon ◽  
Magnetic Recording ◽  
Near Field ◽  
Metal Structure ◽  
Spot Size ◽  
Impedance Match ◽  
Localized Surface Plasmon ◽  
Heat Assisted Magnetic Recording ◽  
Localized Surface Plasmon Resonances ◽  
High Degree

AbstractTwo main ingredients of plasmonics are surface plasmon polaritons (SPP) and localized surface plasmon resonances (LSPR) as they provide a high degree of concentration of electromagnetic fields in the vicinity of metal surfaces, which is well beyond that allowed by the diffraction limit of optics. Those properties have been used in the new technique of heat assisted magnetic recording (HAMR) to overcome an existing limit of conventional magnetic recording by utilizing a near-field transducer (NFT). The NFT designs are based on excitation of surface plasmons on a metal structure, which re-radiate with a subdiffraction limited light spot confined in the near field. In this paper, we propose a novel “droplet”-shaped NFT, which takes full advantage of a recenltly proposed Mach–Zehnder Interferometer (MZI), a coupling arrangement that allows optimal coupling of light to the transducer. The droplet design ensures better impedance match with the recording media and, consequently, better coupling of power. The droplet design results in very high enhancement of the electric field and allows the confinement of light in a spot size much smaller than the present stateof- the-art lollipop transducer.

Design for cooling near-field transducer using surface plasmon polariton waveguide for heat-assisted magnetic recording

2018 ◽  
Vol 57 (9S2) ◽  
pp. 09TB01
Author(s):  
Katsuji Nakagawa ◽  
Kousuke Kimura ◽  
Yoshihiko Hayashi ◽  
Kyosuke Tamura ◽  
Yoshito Ashizawa ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Magnetic Recording ◽  
Surface Plasmon Polariton ◽  
Near Field ◽  
Heat Assisted Magnetic Recording ◽  
Plasmon Polariton
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