2026-10-12T17:03:36Z https://www.scidb.cn/oai

10.57760/sciencedb.10843 2023-09-07T15:26:32Z

2023-09-07 High ytterbium concentration Yb/Al/P/Ce co-doped silica fiber for 1-μm ultra-short cavity fiber laser application doi:10.57760/sciencedb.10843 en We demonstrate a high ytterbium concentration Yb/Al/P/Ce co-doped silica fiber by conventional modified chemical vapor deposition (MCVD) technology and solution doping process. The fiber has a Yb concentration of about 2.5 wt%, and the corresponding core absorption coefficient is measured to be ~1400 dB/m at 976 nm. The gain coefficient was measured to be approximately 1.0 dB/cm. It is found that the Yb/Al/P/Ce co-doped silica shows a lower photodarkening-induced equilibrium loss of 52 dB/m at 633nm than the Yb/Al/P co-doped silica fiber of 117 dB/m. Using the heavily Yb3+-doped silica fiber, a compact and robust ultrashort cavity single-frequency fiber laser was achieved with a maximum output power of 75 mW and a linewidth of 14 kHz. Furthermore, a compact passively mode-locked fiber laser (MLFL) with a repetition rate of 1.23 GHz was also proposed using our developed Yb-doped fiber. The laser properties of the proposed lasers were systematically investigated, demonstrating the superior performance of this fiber in terms of photodarkening resistance and ultrashort-cavity laser application. Furthermore, utilizing an all-fiber structure based on silica-based fiber offers the significant advantage of high stability and reliability. Yb-doped silica fiber; ultra-short cavity fiber laser; single-frequency fiber laser; high-repetition-rate passive mode-locked fiber laser 阳求柏 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank