Thermally assisted magnetic head

A thermally assisted magnetic head comprising:

• a slider having a medium-facing surface;
• and
• a light source unit having a light source support substrate and a light source disposed on the light source support substrate, wherein
• the slider has a slider substrate and a magnetic head portion disposed on a side of the medium-facing surface in the slider substrate;
• the magnetic head portion comprises a magnetic recording element for generating a magnetic field, and a waveguide for receiving light through an end face thereof opposite to the medium-facing surface, and guiding the light to the medium-facing surface;
• the light source support substrate is fixed to a surface opposite to the medium-facing surface in the slider substrate so that light emitted from the light source can enter the end face of the waveguide;
• the light source is disposed on a side surface of the light source support substrate;
• the light source unit has an insulating layer and an electrode pad for applying a voltage to the light source to activate the light source;
• the insulating layer and the electrode pad are provided between the light source and the light source support substrate;
• and
• the electrode pad is provided between the light source and the insulating layer.