| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fiber laser device capable of stabilizing an intensity of laser light output therefrom. <P>SOLUTION: The fiber laser device 100 includes an excitation light source 11 which outputs excitation light, a rare earth-doped fiber 20 to which the excitation light is input, and a first FBG 30 formed on one side of the rare earth-doped fiber 20 and a second FBG 40 formed on the other side of the rare earth-doped fiber 20, which are configured to reflect light amplified in the rare earth-doped fiber 20. The second FBG 40 has a reflectance lower than that of the first FBG 30, a reflection wavelength band within the one of the first FBG 30, and a Bragg wavelength on the short wavelength side of the Bragg wavelength of the first FBG 30. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
