Tang Hao, Zhao Huizi, Wang Rui, Li Liang, Yang Zining, Wang Hongyan, Yang Weiqiang, Han Kai, Xu Xiaojun
Opt Express. 2021 Nov 8;29(23):38728-38736. doi: 10.1364/OE.442523.
We described a wavelength locked and spectral narrowed high-power diode laser with a Faraday anomalous dispersion optical filter (FADOF). By an external cavity with a Rb FADOF, the central wavelength of the diode laser was precisely locked to the Rb resonance D line. The bandwidth was narrowed from the free-running 4 nm to 0.002 nm (1.2 GHz, FWHM). At 4.9 A maximal driven current, the laser produced a continuous wave (CW) output of 18 W with an external cavity efficiency of 80%, either the current or the temperature had no impact on the central wavelength of the diode laser. The Rb cell works well without any damage under a long-time running. This ultra-stable and extreme-narrowed high power diode laser would find many applications in alkali lasers pumping, metastable rare gas laser pumping, spin-exchange optical pumping, and quantum optics.
我们描述了一种带有法拉第反常色散光学滤波器（FADOF）的波长锁定且光谱窄化的高功率二极管激光器。通过带有铷FADOF的外腔，二极管激光器的中心波长被精确锁定到铷共振D线。带宽从自由运行时的4 nm窄化至0.002 nm（1.2 GHz，半高宽）。在4.9 A的最大驱动电流下，该激光器产生18 W的连续波（CW）输出，外腔效率为80%，电流或温度对二极管激光器的中心波长均无影响。铷池在长时间运行下无任何损坏且工作良好。这种超稳定且极窄化的高功率二极管激光器将在碱金属激光器泵浦、亚稳态稀有气体激光器泵浦、自旋交换光泵浦以及量子光学等领域有诸多应用。
