The fiber laser has undergone rapid development, with outstanding properties in terms of power output, brightness and optical efficiency[1,2]. Remarkable progress has further promoted diverse applications in the fields of manufacturing industry, medical science, remote sensing and communications. At the time of writing, the most common implementation is based on active fibers such as Yb-doped fiber, boosting the record for power scaling to greater than 10 kW[3–5]. Another way to obtain high-power laser output is the Raman fiber laser (RFL), which employs the stimulated Raman scattering (SRS) effect in a piece of passive fiber without any rare-earth dopants[6–8]. Compared with Yb-doped fiber lasers (YDFLs), the most attractive feature of the RFL is wavelength flexibility. It can emit across almost the whole spectrum of transparency of a silica window, in particular beyond the emission band of rare-earth-doped fiber lasers[9–19].
Set citation alerts for the article
Please enter your email address