THERMALLY ASSISTED RECORDING HEAD HAVING RECESSED WAVEGUIDE WITH NEAR FIELD TRANSDUCER AND METHODS OF MAKING SAME
First Claim
1. An apparatus, comprising:
- a near field transducer comprising a conductive metal film having a main body and a ridge extending from the main body; and
an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers.
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Accused Products
Abstract
According to one embodiment, an apparatus includes a near field transducer comprising a conductive metal film having a main body and a ridge extending from the main body and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers. In another embodiment, a method includes forming a near field transducer structure and removing a portion of the near field transducer structure. The method also includes forming a cladding layer adjacent a remaining portion of the near field transducer structure, wherein a portion of the cladding layer extends along the remaining portion of the near field transducer structure and forming a core layer above the cladding layer. Other apparatuses and methods are also included in the invention.
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Citations
25 Claims
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1. An apparatus, comprising:
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a near field transducer comprising a conductive metal film having a main body and a ridge extending from the main body; and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus, comprising:
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a near field transducer comprising a conductive metal film; and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than about 10 nanometers. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method, comprising:
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forming a near field transducer structure; removing a portion of the near field transducer structure; forming a cladding layer adjacent a remaining portion of the near field transducer structure, wherein a portion of the cladding layer extends along the remaining portion of the near field transducer structure; and forming a core layer above the cladding layer. - View Dependent Claims (20, 21, 22)
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23. A method, comprising:
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forming a lower cladding layer; forming a near field transducer structure above the lower cladding layer; removing a portion of the near field transducer structure; forming a second cladding layer adjacent a remaining portion of the near field transducer structure and above the lower cladding layer, wherein a portion of the second cladding layer extends along the remaining portion of the near field transducer structure; forming a core layer above the second cladding layer. - View Dependent Claims (24, 25)
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Specification