Thermally assisted magnetic recording on a bit-patterned medium by using a near-field optical head with a beaked metallic plate

2008 ◽  
Vol 93 (3) ◽  
pp. 031108 ◽  
Author(s):  
Takuya Matsumoto ◽  
Kimio Nakamura ◽  
Tetsuya Nishida ◽  
Hiroyuki Hieda ◽  
Akira Kikitsu ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Near Field ◽  
Metallic Plate ◽  
Optical Head ◽  
Thermally Assisted Magnetic Recording

scholarly journals Thermally Assisted Magnetic Recording Using an Optical Head with NA = 0.85

2006 ◽  
Vol 30 (6−2) ◽  
pp. 655-658 ◽  
Author(s):  
T. Kamimura ◽  
T. Morikawa ◽  
S. Shimokawa ◽  
S. Hamaguchi ◽  
K. Matsumoto
Keyword(s):  
Magnetic Recording ◽  
Optical Head ◽  
Thermally Assisted Magnetic Recording

scholarly journals Thermally Assisted Magnetic Recording Applying Optical Near Field with Ultra Short-Time Heating

2013 ◽  
pp. 119-122 ◽  
Author(s):  
K. Nakagawa ◽  
A. Tajiri ◽  
K. Tamura ◽  
S. Toriumi ◽  
Y. Ashizawa ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Near Field ◽  
Short Time ◽  
Thermally Assisted Magnetic Recording

scholarly journals Integrated head design using a nanobeak antenna for thermally assisted magnetic recording

2012 ◽  
Vol 20 (17) ◽  
pp. 18946 ◽  
Author(s):  
Takuya Matsumoto ◽  
Fumiko Akagi ◽  
Masafumi Mochizuki ◽  
Harukazu Miyamoto ◽  
Barry Stipe
Keyword(s):  
Magnetic Recording ◽  
Thermally Assisted Magnetic Recording

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.

Optimal tolerance allocation in the optical head of near-field recording system

2006 ◽  
Author(s):  
Jun-Hee Lee ◽  
Hyoung-Kil Yoon ◽  
Jaehwa Jeong ◽  
Dae-Gab Gweon ◽  
Wan-Doo Kim
Keyword(s):  
Near Field ◽  
Recording System ◽  
Tolerance Allocation ◽  
Optical Head ◽  
Field Recording
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