Laser feedback suppressor for heat-assisted magnetic recording

Aidan Goggin; John M  Moloney; Reyad Mehfuz; Chuan Zhong; Christopher Harvey

Laser feedback suppressor for heat-assisted magnetic recording

Aidan Goggin (Inventor), John M Moloney (Inventor), Reyad Mehfuz (Inventor), Chuan Zhong (Inventor), Christopher Harvey (Inventor)

Research output: Patent

Abstract

A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.

Original language	English
Patent number	11227633
Publication status	Published - 18 Jan 2022

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title = "Laser feedback suppressor for heat-assisted magnetic recording",

abstract = "A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.",

author = "Aidan Goggin and Moloney, {John M} and Reyad Mehfuz and Chuan Zhong and Christopher Harvey",

year = "2022",

month = jan,

day = "18",

language = "English",

type = "Patent",

note = "11227633",

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TY - PAT

T1 - Laser feedback suppressor for heat-assisted magnetic recording

AU - Goggin, Aidan

AU - Moloney, John M

AU - Mehfuz, Reyad

AU - Zhong, Chuan

AU - Harvey, Christopher

PY - 2022/1/18

Y1 - 2022/1/18

N2 - A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.

AB - A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.

M3 - Patent

M1 - 11227633

ER -

Laser feedback suppressor for heat-assisted magnetic recording

Abstract

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