System for providing an energy assisted magnetic recording head having a leading face-mounted laser
View Patent ↗A system for providing energy assisted magnetic recording (EAMR) heads using a substrate is described. The substrate has front and back sides and apertures therein. The apertures are through-holes between the front and back sides of the substrate. The system includes providing a transmission medium in the apertures and fabricating EAMR transducers on the front side of the substrate. The EAMR transducers correspond to the apertures and the EAMR heads. The system also includes electrically insulating the back side of the substrate. The back side of the substrate is also prepared for mounting of the lasers. The lasers then are coupled the back side of the substrate. The lasers correspond to the EAMR heads and are configured to provide light through the apertures to the EAMR transducers. The system also includes separating the substrate into the EAMR heads.
1. An energy assisted magnetic recording (EAMR) head comprising:
a slider including a leading edge and a trailing edge and an aperture therein, the aperture being a through hole between the leading edge and the trailing edge;
a transmission medium residing in the aperture;
at least one EAMR transducer residing on the trailing edge of the slider; and
at least one laser residing on the leading edge and providing light to the EAMR transducer through the aperture.
2. The EAMR head of claim 1 wherein the transmission medium includes at least one of a waveguide-compatible material, an index-matching material and a gas.
3. The EAMR head of claim 2 wherein the transmission medium includes at least one of boron phosphate silicon glass, tantalum oxide, alumina, silica gel, Au, ambient air, and He.
4. The EAMR head of claim 1 wherein the at least one EAMR transducer includes a waveguide and an optical system configured to direct the light from the aperture to the waveguide.
5. The EAMR head of claim 1 wherein the apertures has a diameter of at least twelve microns and not more than five hundred microns.
6. The EAMR head of claim 1 wherein the aperture is at least forty-five microns and not more than one hundred microns.