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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 languageEnglish
Patent number11227633
Publication statusPublished - 18 Jan 2022

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