A laser assembly is suitable for coupling laser light into at least one optical fiber. The laser assembly contains a plurality of laser light sources disposed spaced from a light entrance surface of the at least one optical fiber. The laser light sources are divided into at least one group of first laser light sources and at least one group of second laser light sources. An aperture is provided and is suitable for spatially confining the laser light emitted during operation of the laser light sources before being coupled into the at least one optical fiber. A coupling device is provided and is suitable for coupling the laser light during operation of the first and second laser light sources before it enters into the at least one optical fiber.