Inverse tapered waveguide for use in a heat assisted magnetic recording head

摘要

A heat-assisted magnetic recording (HAMR) transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The HAMR transducer includes a write pole, at least one coil, and an inverse tapered waveguide optically coupled with the laser. The write pole is configured to write to a region of the media. The coil(s) energize the write pole. The inverse tapered waveguide includes an entrance distal from the ABS, a bottom proximate to the ABS, a first side and a second side opposite to the first side. The first side and the second side diverging such that at least a portion of the inverse tapered waveguide between the bottom and the top is wider than the entrance.

主权项

1. A heat assisted magnetic recording (HAMR) transducer coupled with a laser for providing energy and having an air-bearing surface (ABS) configured to reside in proximity to a media during use, the HAMR transducer comprising:
a write pole configured to write to a region of the media; at least one coil for energizing the write pole; and an inverse tapered waveguide including an entrance distal from the ABS, a bottom proximate to the ABS, a first side and a second side opposite to the first side, the first side and the second side diverging such that the bottom of the inverse tapered waveguide is wider than the entrance, the entrance of the waveguide being directly optically coupled with the laser, the first side and the second side diverging without converging such that any portion of the inverse tapered waveguide is not narrower than any other portion of the tapered waveguide that is closer to the entrance.