Systems and methods for suppressing background energy of a waveguide in an energy assisted magnetic recording system
AssigneeWestern Digital (Fremont), LLC
InventorsHongxing Yuan, Ronald L. Allen, Michael V. Morelli, Matthew R. Gibbons, Zhong Shi
Life of this patent
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Abstract
Systems and methods for suppressing the background energy of a waveguide in an EAMR system are provided. One such system includes a near field transducer having a disk section and a pin section extending from the disk section to an air bearing surface of a slider, a waveguide having a core and a cladding, where the waveguide is configured to couple light energy to the near field transducer, where the cladding is configured to substantially surround the core, and a recess portion positioned between the core and the air bearing surface.
Claims31
A system to facilitate an energy assisted magnetic recording, the system comprising:
- a near field transducer comprising a disk section and a pin section, wherein the pin section extends from the disk section and terminates at an air bearing surface of a slider;
- a waveguide comprising a core and a cladding, wherein the waveguide is configured to couple light energy to the near field transducer, and wherein the cladding is configured to substantially surround the core;
- and
- a recess portion positioned between the core and the air bearing surface, wherein a width of the recess portion is selected to achieve a predetermined degree of suppression of background energy generated by the waveguide.
A system for suppressing background energy generated by a waveguide in energy assisted magnetic recording, the system comprising:
- a near field transducer comprising a disk section and a pin section extending from the disk section to an air bearing surface of a slider;
- a waveguide comprising a core and a cladding, the waveguide configured to couple light energy to the near field transducer, and the cladding configured to substantially surround the core, wherein the core comprises a V-shape having a flat edge at the point of the V-shape, and wherein the flat edge is substantially parallel to the air bearing surface;
- and
- a recess portion positioned between the core and the air bearing surface.
A method to facilitate an energy assisted magnetic recording, the method comprising:
- providing a waveguide comprising a core and a cladding, wherein the cladding is configured to substantially surround the core;
- providing a recess portion positioned between the core and an air bearing surface of a slider, wherein a width of the recess portion is selected to achieve a predetermined degree of suppression of background energy generated by the waveguide;
- and
- providing a near field transducer comprising a disk section and a pin section, wherein the pin section extends from the disk section and terminates at the air bearing surface, and wherein the waveguide is configured to couple light energy to the near field transducer.
A method for suppressing background energy generated by a waveguide in energy assisted magnetic recording, the method comprising:
- providing a waveguide comprising a core and a cladding, the cladding configured to substantially surround the core, wherein the core comprises a V-shape having a flat edge at the point of the V-shape, and wherein the flat edge is substantially parallel to the air bearing surface;
- providing a recess portion positioned between the core and an air bearing surface of a slider;
- and
- providing a near field transducer comprising a disk section and a pin section extending from the disk section to the air bearing surface, wherein the waveguide is configured to couple light energy to the near field transducer.
Dependencies are inferred from the claim text.