Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive
View Patent ↗A method and system for providing an energy assisted magnetic recording (EAMR) disk drive are described. The EAMR disk drive includes a slider, at least one EAMR transducer on the slider, and at least one laser coupled with the slider. The slider has a slider back side, a trailing face, and an intersection. The trailing face and the slider back side meet at the intersection. The trailing face makes an angle different from ninety degrees with the slider back side at the intersection. The laser(s) have an optical axis and are optically coupled with the trailing face of the slider. The optical axis is substantially perpendicular to the intersection and parallel to the slider back side.
1. An energy assisted magnetic recording (EAMR) disk drive comprising:
a slider having a slider back side, a trailing face, and an intersection, the trailing face and the slider back side meeting at the intersection, the trailing face making an angle different from ninety degrees with the slider back side at the intersection;
at least one EAMR transducer on the slider; and
at least one laser coupled with the slider, the at least one laser having an optical axis and being optically coupled with the trailing face of the slider, the optical axis being substantially perpendicular to the intersection and parallel to the slider back side.
2. The EAMR disk drive of claim 1 wherein the at least one laser includes at least one laser diode.
3. The EAMR disk drive of claim 1 wherein the at least one EAMR transducer further includes:
at least one grating on the trailing face of the slider.
4. The EAMR disk drive of claim 3 wherein the at least one transducer further includes:
at least one wave guide optically coupled with the at least one grating;
at least one near-field transducer optically coupled with the at least one wave guide, the at least one near-field transducer for heating a region of a recording media; and
at least one magnetic recording pole configured to provide a write field in the region of the magnetic recording media during heating.
5. The EAMR disk drive of claim 3 wherein the at least one laser is optically coupled to the grating.
6. The EAMR disk drive of claim 1 wherein the angle is not more than at least 75 degrees and less than 90 degrees.
7. The EAMR disk drive of claim 6 wherein the angle is greater than or equal to at least 81.3 degrees and not more than 82.7 degrees.
8. The EAMR disk drive of claim 6 wherein the angle is greater than or equal to 81.9 and not more than 82.1.
9. The EAMR disk drive of claim 1 wherein the angle is greater than 90 degrees and not more than 105 degrees.
10. The EAMR disk drive of claim 1 wherein the angle is within 0.7 degrees of a predetermined angle.
11. The EAMR disk drive of claim 10 wherein the angle is within 0.1 degrees of the predetermined angle.
12. An energy assisted magnetic recording (EAMR) disk drive comprising:
a slider having a slider back side, a trailing face, and an intersection, the trailing face and the slider back side meeting at the intersection, the trailing face making an angle different from ninety degrees with the slider back side at the intersection, the angle being within 0.1 degrees of a predetermined desired angle;
at least one write transducer residing on the trailing face of the slider and including at least one grating; and
at least one laser diode coupled with the slider, each of the at least one laser diode having an optical axis and being optically coupled with the at least one grating, the optical axis being substantially perpendicular to the intersection and parallel to the slider back side.
13. A method for providing an energy assisted magnetic recording (EAMR) disk drive comprising:
providing a slider having a slider back side, a trailing face, and an intersection, the trailing face and the slider back side meeting at the intersection, the trailing face making an angle different from ninety degrees with the slider back side at the intersection;
providing at least one EAMR transducer on the slider; and
mounting at least one laser with the slider, the at least one laser having an optical axis and being optically coupled with the trailing face of the slider, the laser diode being mounted such that the optical axis is substantially perpendicular to the intersection and parallel to the slider back side.
14. The method of claim 13 wherein the at least one laser includes at least one laser diode.
15. The method of claim 13 wherein the step of providing the at least one EAMR transducer further includes:
providing at least one grating on the trailing face of the slider.
16. The method of claim 15 wherein the mounting step further includes:
affixing the at least one laser diode such that the at least one laser diode is optically coupled to the grating.
17. The method of claim 13 wherein the step of providing the slider further includes:
machining the trailing face of the slider to provide the angle.
18. The method of claim 17 wherein the angle is at least 75 degrees and less than 90 degrees.
19. The method of claim 18 wherein the angle is greater than or equal to 81.3 degrees and not more than 82.7 degrees.
20. The method of claim 18 wherein the angle is greater than or equal to 81.9 degrees and not more than 82.1 degrees.
21. The method of claim 13 wherein the angle is greater than 90 degrees and not more than 105 degrees.
22. The method of claim 18 wherein the angle is within 0.7 degrees of a predetermined angle.
23. The method of claim 22 wherein the angle is within 0.1 degrees of the predetermined angle.