Light source unit, heat-assisted magnetic recording head using the same, and light source for light source unit
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United States of America Patent
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Nov 8, 2016
Grant Date -
Aug 11, 2016
app pub date -
Mar 13, 2015
filing date -
Feb 6, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A light source unit has a substrate, a light source that is mounted to the substrate. The light source includes; a first emission part that emits a forward light, the forward light being a laser light in an oscillation state; a second emission part that is located on a side opposite to the first emission part and that emits a rearward light, the rearward light being a laser light in an oscillation state; and a light leakage part located at a position different from the first emission part and the second emission part. The light source further includes a photodetector that is provided on the substrate, wherein the photodetector has a light receiving surface for detecting a leakage light that leaks from the light leakage part.
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