Semiconductor laser module
AssigneeFurukawa Electric Co., Ltd.
InventorsYuta Ishige, Etsuji Katayama
Life of this patent
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Abstract
A semiconductor laser module that can increase output of an optical fiber laser is provided. The semiconductor laser module includes: a mounted-base member having a mounted-base face; a plurality of semiconductor laser elements installed on the mounted-base face of the mounted-base member; a lens that collimates laser light emitted from the semiconductor laser element; a condensing lens that condenses the laser light; and an optical fiber to which the condensed laser light is optically coupled, and further includes: between the condensing lens that condenses the laser light and the lens that collimates laser light emitted from the semiconductor laser element, an aperture that restricts light in a slow axis direction of the laser light.
Claims12
A semiconductor laser module comprising:
- a mounted-base member having a mounted-base face;
- a plurality of semiconductor laser elements installed on the mounted-base face of the mounted-base member;
- a plurality of lenses that collimate laser light emitted from the plurality of semiconductor laser elements;
- a condensing lens that condenses the laser light;
- an optical fiber to which the condensed laser light is optically coupled;
- and
- an aperture provided between the condensing lens that condenses the laser light and the plurality of lenses that collimate the laser light emitted from the plurality of semiconductor laser elements, and configured to restrict light in a slow axis direction of the laser light, wherein the aperture comprises a member defining a space through which the laser light passes, the space having a U-shape or a rectangular shape in a direction perpendicular to a traveling direction of the laser light such that the aperture causes the laser light guided to the condensing lens to have a constant width in the slow axis direction regardless of a position of the laser light in a fast axis direction.
Dependencies are inferred from the claim text.