Method and system for providing an energy assisted magnetic recording head
View Patent ↗A method and system for providing an energy assisted magnetic recording (EAMR) head are described. The method and system include providing a slider, an EAMR transducer coupled with the slider, and a top layer on the slider. The top layer includes a mirror well therein and has a substantially flat top surface. The method and system further includes providing a laser including a light-emitting surface and providing a mirror optically coupled with the laser. The laser is coupled to the top surface of the top layer external to the mirror well. The mirror has a bottom surface and a reflective surface facing the light-emitting surface of the laser. A portion of the bottom surface of the mirror is affixed to the top surface of the top layer. A portion of the mirror resides in the mirror well.
1. An energy assisted magnetic recording (EAMR) head comprising:
a slider;
an EAMR transducer coupled with the slider;
a top layer on the slider, the top layer including a mirror well therein and having a substantially flat top surface;
a laser including a light-emitting surface, the laser being coupled to the top surface of the top layer external to the mirror well; and
a mirror optically coupled with the laser, the mirror having a bottom surface and a reflective surface facing the light-emitting surface of the laser, a portion of the bottom surface being affixed to the top surface of the top layer, a portion of the mirror residing in the mirror well.
2. The EAMR head of claim 1 wherein the top layer further includes a heat sink cavity therein, the EAMR head further comprising:
a heat sink residing in the heat sink cavity and having a heat sink top surface being substantially coplanar with and forming a portion of the top surface of the top layer, the laser being coupled to the heat sink.
3. The EAMR head of claim 1 wherein the laser includes a laser bottom surface and wherein the laser bottom surface is within an offset distance of the portion of the bottom surface of the mirror affixed to the top layer, a variation of the offset distance being not more than one micron.
4. The EAMR head of claim 3 wherein the variation of the offset distance is not more than one-half micron.
5. The EAMR head of claim 1 further comprising:
a bond pad, the laser being affixed to the bond pad.
6. The EAMR head of claim 1 further comprising:
an antireflective coating on the slider forming a bottom of the mirror-well.
7. The EAMR head of claim 1 further comprising:
an enclosure layer for enclosing the mirror and the laser.
8. The EAMR head of claim 1 wherein the reflective surface is a concave, parabolic reflective surface.
9. The EAMR head of claim 1 wherein the EAMR transducer further includes a grating, the top layer residing on a portion of the grating.