Patent ID: 9163939
Filing Date: 2015-10-20
Classification: G01B,G11B,Y10T

Abstract:
1. A method of manufacturing a thermally-assisted magnetic head, the method comprising: providing a slider having a thermally-assisted magnetic recording head section thereon, the thermally-assisted magnetic recording head section including a magnetic pole, an optical waveguide, and a plasmon generator, the magnetic pole and the optical waveguide both extending toward an air bearing surface, the plasmon generator being located between the magnetic pole and the optical waveguide; providing a light source unit including a laser diode, the light source unit being attached at a surface of the slider which is opposite the air bearing surface; providing a reflection board positioned at the side of the air bearing surface of the slider, and a photo detector positioned at the side of the slider which is opposite the air bearing surface and located above the laser diode; driving the laser diode to emit a light beam towards the reflection board; performing an alignment between the light source unit and the thermally-assisted magnetic recording head section, based on a reflected light of the light beam reflected by the reflection board, then passed through the optical waveguide and finally detected by the photo detector obtaining the maximum power in a LED emission state of the laser diode; and bonding the light source unit to the slider after the alignment is completed, wherein the reflection board is a disk or a reflector that has the same reflectivity of the disk.