Optical fiber laser and laser light emitting method

摘要

An optical fiber laser includes a resonator (107) comprising an erbium-doped glass fiber (103) serving as a gain medium and a pumping light source (102) that launches pumping light (104) into the erbium-doped glass fiber (103). The pumping light source (102) emits pumping light (104) of a wavelength of 980 nm or longer, and the optical fiber laser (101) emits laser light (106) in a wavelength band of 2.8 mu m (2.7 mu m to 3.0 mu m). <IMAGE>