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.
Claims13
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.
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, and
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities.
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, and
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities.
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, and
- at least one of said plurality of cavities has a cavity length different from another of said plurality of cavities.
A production method of a semiconductor laser comprising the steps of:
- a step of constructing a plurality of cavities corresponding to a plurality of light emitting units disposed on a substrate, and
- a step of removing a part of at least one of said plurality of cavities to set cavity lengths of said plurality of cavities.
Dependencies are inferred from the claim text.