FIBER LASER

摘要

Supplied is a fiber laser which can be supplied at a cheap price and has an easy manufacturing process, small size and simple composition. A connected optical fiber is prepared by joining end faces of an excitation-use light source with those of an amplification-use optical fiber. The end faces which connect the aforementioned amplification-use optical fiber and optical fiber consist of at least one of the mirror faces of a resonator. For example, in the case of a connection surface where an amplification-use optical fiber based on glass with a refractive index of 1.8-2.3 and an optical fiber based on quartz with a refractive index of 1.4-1.5 are connected at an end-face angle of 1.0 degrees or less, a mirror surface of the resonator is used.