Method and system for providing a laser cavity for an energy assisted magnetic recording head
View Patent ↗A method for providing a capping layer configured for an energy assisted magnetic recording (EAMR) head including at least one slider. The method comprises etching a substrate having a top surface using an etch to form a trench in the substrate, the trench having a first surface at a first angle from the top surface and a second surface having a second angle from the top surface. The method further comprises providing a protective coating exposing the second surface and covering the first surface, removing a portion of the substrate including the second surface to form a laser cavity within the substrate configured to fit a laser therein, and providing a reflective layer on the first surface to form a mirror, the cavity and mirror being configured for alignment of the laser to the laser cavity and to the mirror and for bonding the laser to the laser cavity.
1. A capping layer for use in an energy assisted magnetic recording (EAMR) head having a slider and a laser having a junction surface, the junction surface of the laser configured to be attached to the slider, the capping layer comprising:
a top surface having a laser cavity therein, the top surface configured for alignment to the junction surface of the laser and attachment to the slider;
a mirror at a first angle from and adjoining the top surface, the first angle corresponding to a particular crystallographic plane and a particular angle;
the laser cavity configured to fit a laser therein and meeting the mirror at a standoff edge opposite from the top surface, the cavity and mirror being configured for alignment of the laser to the laser cavity and to the mirror using the top surface and the standoff edge.
2. An energy assisted magnetic recording (EAMR) head comprising:
a slider including a leading edge and a trailing edge and at least one EAMR transducer residing on the slider;
at least one laser for providing light to the EAMR transducer;
a capping layer having a top surface, a mirror and a laser cavity therein, the top surface configured for alignment to the junction surface of the laser and attachment to the slider, the mirror at a first angle from and adjoining the top surface, the first angle corresponding to a particular crystallographic plane and a particular angle, the laser cavity configured to fit the laser therein and meeting the mirror at a standoff edge opposite from the top surface.