Semiconductor laser apparatus, laser coupler, data reproduction apparatus, data recording apparatus and production method of semiconductor laser apparatus
AssigneeSony Corporation
InventorKazuhiko Nemoto
Life of this patent
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Abstract
There is provided a semiconductor laser apparatus capable of individually optimizing oscillations at a plurality of light emitting units fabricated on the single substrate in accordance with usages of each emitted laser lights. A plurality of cavities (laser diodes A and B), which correspond to the plurality of light emitting units, are fabricated on single substrate. And cavity lengths of the cavities are fabricated to different from one another.
Claims24
A semiconductor laser apparatus having a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate, wherein:
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities, and
- said plurality of cavities is fabricated to have cavity lengths all less than a length of said substrate.
A laser coupler apparatus having a semiconductor laser apparatus, wherein:
- said semiconductor laser apparatus comprises a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate,
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities, and
- said plurality of cavities is fabricated to have cavity lengths all less than a length of said substrate.
A data reproducing apparatus having a semiconductor laser apparatus, wherein:
- said semiconductor laser apparatus comprises a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate,
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities, and
- said plurality of cavities is fabricated to have cavity lengths all less than a length of said substrate.
A data recording apparatus having a semiconductor laser apparatus, wherein:
- said semiconductor laser apparatus comprises a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate,
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities, and
- said plurality of cavities is fabricated to have cavity lengths all less than a length of said substrate.
A semiconductor laser apparatus having a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate, wherein:
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities,
- said plurality of cavities is fabricated to have cavity lengths all less than a length of said substrate, and
- a barrier member is disposed in between neighboring cavities, the baffler member having a length longer than the cavity lengths.
A semiconductor laser apparatus having a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate, wherein:
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities, the cavity length being in a direction parallel to a surface of the substrate on which the light emitting units are disposed, and
- one of said plurality of cavities comprises a three-element type compound semiconductor, and another of the plurality of cavities comprises a four-element type compound semiconductor.
A semiconductor laser apparatus having a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate, at least one of said plurality of cavities having a recess formed therein, a portion of the cavity on a first side of the recess being a light emitting portion and having a cavity length different from another of said plurality of cavities, a portion of the cavity on a side of the recess opposite the first side being a light receiving portion.
Dependencies are inferred from the claim text.