Patent ID: 9692205
Date: 2017-06-27
CPC Classifications: G02B,H01S

Claim:
1. A semiconductor laser module comprising: a semiconductor laser element emitting a laser light; an optical fiber, into which the laser light emitted from the semiconductor laser element is incident, guiding the laser light; and an optical-fiber-holding unit having a fixing agent and holding the optical fiber, the fixing agent being for fixing the optical fiber, wherein the fixing agent is provided at an area in which a power of a leakage light of the laser light having been incident into the optical fiber and then emitted to outside the optical fiber is low, the area in which the power of the leakage light is low includes an outer fixing area and an inner fixing area the outer fixing area having an angle equal to or greater than 15° from a cross-sectional center of an end portion of a side, into which the laser light is incident, of the optical fiber relative to a center axis of the optical fiber in a direction in which a diameter of a field of the laser light incident into the optical fiber is the longest, the inner fixing area having an angle equal to or smaller than −1.15 θ the fixing agent is provided at at least one of the outer fixing area and the inner fixing area.