242W Single-Mode CW Fiber Laser Operating at 1030nm Lasing Wavelength and with 0.35nm Spectral Width

Conventional high-power, single-mode CW fiber lasers typically have operating ranges limited to 1060-1110nm. Here we demonstrate a fiber laser with 242W output power, operating at 1030nm with narrow 0.35nm line-width and diffraction limited beam M2=1.05