20240013806. LASER FEEDBACK SUPPRESSOR FOR HEAT-ASSISTED MAGNETIC RECORDING simplified abstract (Seagate Technology LLC)
LASER FEEDBACK SUPPRESSOR FOR HEAT-ASSISTED MAGNETIC RECORDING
Organization Name
Inventor(s)
Aidan Dominic Goggin of Donegal (IE)
John Moloney of Castleconnell (IE)
Christopher Neil Harvey of Derry (GB)
LASER FEEDBACK SUPPRESSOR FOR HEAT-ASSISTED MAGNETIC RECORDING - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240013806 titled 'LASER FEEDBACK SUPPRESSOR FOR HEAT-ASSISTED MAGNETIC RECORDING
Simplified Explanation
The abstract describes a patent application for a recording head that uses a channel waveguide to deliver light to a media-facing surface. The head includes a near-field transducer (NFT) located at the end of the channel waveguide and near the media-facing surface. The NFT is illuminated by a laser with an active region that has a longitudinal axis corresponding to the propagation direction of the channel waveguide. The front facet of the laser has a surface shape designed to suppress back reflection of the light.
- The patent application describes a recording head that uses a channel waveguide to deliver light to a media-facing surface.
- The head includes a near-field transducer (NFT) located at the end of the channel waveguide and near the media-facing surface.
- A laser with an active region is used to illuminate the NFT, and its longitudinal axis corresponds to the propagation direction of the channel waveguide.
- The front facet of the laser has a surface shape that suppresses back reflection of the light.
Potential Applications
- Optical data storage systems
- High-density recording devices
- Optical communication systems
Problems Solved
- Minimizing back reflection of light in recording heads
- Enhancing the efficiency and accuracy of data storage and retrieval
- Improving the performance of optical communication systems
Benefits
- Increased data storage density
- Improved signal-to-noise ratio
- Enhanced data transfer rates
- Higher reliability and durability of recording heads
Original Abstract Submitted
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.
