HAMR near field transducers based on microcavity disk lasers

Author

Chabalko, Matthew J. ; Quirk, Evan ; Gamble, Andrew ; Yunchuan Kong ; Russin, Rozana ; Slovin, Gregory ; Yi Luo ; Schlesinger, T.E. ; Kuriyama, Kazumi ; Bain, James A.

Author_Institution

Dept. of Electr. & Comput. Eng, Carnegie Mellon Univ., Pittsburgh, PA, USA

fYear

2012

fDate

Oct. 31 2012-Nov. 2 2012

Firstpage

1

Lastpage

2

Abstract

This paper presents a design for a near field transducer (NFT) for heat assisted magnetic recording. The envisioned device is a microcavity disk laser that is proximate to a metallic needle. The optical excitation of the end of the needle from modes within the laser is carried to the surface of the medium along the needle and localized within the medium as a hot spot. Aspects of the design which are examined and optimized include the optical efficiency, i.e. the fraction of emitted optical power delivered to the FWHM of the hot spot (~10%), the ratio of temperature in the medium to that in the needle (4x) and possible routes to fabricating a realistic structure using a flip chip material transfer process.

Keywords

magnetic recording; microcavity lasers; transducers; FWHM; HAMR; emitted optical power; flip chip material transfer process; heat assisted magnetic recording; hot spot; metallic needle; microcavity disk lasers; near field transducers; optical excitation; Heat-assisted magnetic recording; Heating; Substrates; Heat Assisted Magnetic Recording; Microcavity Laser; Near Field Transducer; Plasmonic Devices;

fLanguage

English

Publisher

ieee

Conference_Titel

APMRC, 2012 Digest

Conference_Location

Singapore

Print_ISBN

978-1-4673-4734-1

Type

conf

Filename

6407370