Xiong Mengyuan, Zhao Yuquan, Wang Dong, Chen Zhong, Xu Bin, Nizamutdinov Alexey, Semashko Vadim, Korableva Stella
Opt Lett. 2023 Sep 15;48(18):4725-4728. doi: 10.1364/OL.498786.
Using a CZ-grown a-cut Pr:YLF crystal as laser gain medium after processing it into crystal fiber, we have demonstrated real Pr-doped single-crystal fiber lasers for the first time to the best of our knowledge. This Pr crystal fiber has absorbed up to 20.4 W of pump power, which is the highest absorbed power among Pr lasers. For two representative laser emissions at about 639 nm and 607 nm, we have achieved maximum output powers of 5.45 W and 3.04 W, respectively. Output powers of the two lasers show very good linearities, which indicate that the present output powers are only limited by the available pump power. Both laser emissions have exhibited near diffraction-limited beam qualities. This proposal has provided a good and feasible route for the development of compact, high-power, and high-brightness all-solid-state Pr visible lasers via crystal fiber.
据我们所知，我们首次使用经加工成晶体光纤的化学气相沉积（CZ）生长的a切割掺镨钇锂氟（Pr:YLF）晶体作为激光增益介质，展示了真正的掺镨单晶光纤激光器。这种掺镨晶体光纤吸收了高达20.4瓦的泵浦功率，这是掺镨激光器中吸收的最高功率。对于约639纳米和607纳米的两种代表性激光发射，我们分别实现了5.45瓦和3.04瓦的最大输出功率。这两种激光器的输出功率显示出非常好的线性，这表明目前的输出功率仅受可用泵浦功率的限制。两种激光发射都表现出接近衍射极限的光束质量。该方案为通过晶体光纤开发紧凑、高功率和高亮度的全固态掺镨可见激光器提供了一条良好且可行的途径。
