| 摘要 |
<p>A fiber laser device capable of performing processing and measurement stably even when the temperature of the use environment changes is provided. The fiber laser device includes: a pumping light source 20 configured to output pumping light having a wavelength »; and a rare earth-doped fiber, wherein when the intensity change rate of the pumping light with respect to the temperature is denoted by ”P dB/°C, the wavelength change rate of the pumping light with respect to the temperature is denoted by ”»p nm/°C, the pumping light absorption change rate of the rare earth-doped fiber 50 per unit wavelength change at the wavelength of » nm when the wavelength of the pumping light changes is denoted by A' (») dB/nm, and the pumping light absorption change amount of the rare earth-doped fiber 50 per unit temperature change at the wavelength of » nm when the temperature of the rare earth-doped fiber 50 changes is denoted by ”A(») dB/°C, the wavelength » of the pumping light is such a wavelength » that ”P, ”»p×A' (») and ”A(») compensate with each other.</p> |
