Fiber laser i.e. double cladded fiber, has reflector including planar reflective surface for wavelength of one of pumped- and working lights, and another reflector including curved reflective surface for wavelength of another light

摘要

The laser has a laser fiber (5) provided with active laser materials, and two optical arrangements provided at two ends of the laser fiber, respectively. A reflector of one of the arrangements is reflective for a pumped light from an external pumped light source (1) and is transmissive for a working light from the laser fiber. A convex lens (3) and another convex lens are chromatically optimized for a wavelength of one of the lights. The reflector includes a planar reflective surface for the wavelength, and another reflector (2) includes a curved reflective surface (9) for another wavelength.