Zhou Lian, Qin Xiong, Di Yuanfeng, Lou Haipeng, Zhang Jianping, Deng Zejiang, Gu Cehnglin, Luo Daping, Li Wenxue
Opt Lett. 2023 Sep 1;48(17):4673-4676. doi: 10.1364/OL.498395.
This Letter presents a 0.4-5.2-µm frequency comb from a compact laser. We designed an integrated fiber device for a figure-9 laser and constructed an all-fiber laser system. The spectrum of the fiber laser was scaled to the broadband region using a chirped periodically poled lithium niobate waveguide. To use this system for gas sensing, a mid-infrared comb with a spectral range of 2.5-5.2 µm and average power of 2.1 mW was divided using an optical filter. The optical part was packaged in a 305 mm × 225 mm × 62 mm box. The comb was stabilized by locking the repetition rate and carrier-envelope offset frequency of the seed source. The system provided an ultrabroadband spectral range from 0.4 to 5.2 µm, which could be applied to spectroscopy, frequency metrology, and optical synthesizers.
本信函展示了一种来自紧凑型激光器的0.4 - 5.2微米频率梳。我们为数字9激光器设计了一种集成光纤器件，并构建了全光纤激光系统。利用啁啾周期极化铌酸锂波导将光纤激光器的光谱扩展到宽带区域。为了将该系统用于气体传感，使用光学滤波器对光谱范围为2.5 - 5.2微米、平均功率为2.1毫瓦的中红外频率梳进行了分割。光学部件被封装在一个305毫米×225毫米×62毫米的盒子中。通过锁定种子源的重复频率和载波包络偏移频率来稳定频率梳。该系统提供了0.4至5.2微米的超宽带光谱范围，可应用于光谱学、频率计量学和光学合成器。
