Method for producing a light source having a diode laser and a plurality of optical fibers

Abstract

A method is described for producing a light source, in particular a light source for optically exciting a laser device, for example a laser device of a laser ignition system of an internal combustion engine, including a diode laser having a plurality of emitters and a fiber optic device. The fiber optic device includes a plurality of optical fibers, each fiber having a first end and a lateral surface area. The first ends are situated relative to the emitters in such a way that light generated by the emitters is injected into the first ends of the optical fibers. The optical fibers are situated in abutment along their lateral surface areas, at least in the region of the first ends of the optical fibers. The method is characterized by the following steps: arranging a plurality of optical fibers which form a fiber section in a subregion, the fiber section being situated between two opposite pressing surfaces; heating the fiber section; and exerting a force on the heated optical fibers with the aid of the pressing surfaces. The force and the heating initially result in deformation of the heated optical fiber. The exerted force and/or a temperature of the optical fibers is/are selected in such a way that the deformation ceases when the optical fibers for the first time fill, at least largely, a region between the pressing surfaces.