Department of Electrical and Computer Engineering, Ryerson University, Toronto, Canada M5B 2K3.
Opt Lett. 2011 Aug 1;36(15):2976-8. doi: 10.1364/OL.36.002976.
A novel (to our knowledge) dual-core ytterbium (Yb(3+)) doped fiber, as an optically pumped amplifier, boosts the output power from a 1060 nm swept source laser beyond 250 mW, while providing a wavelength tuning range of 93 nm, for optical coherence tomography (OCT) imaging. The design of the dual-core Yb-doped fiber amplifier and its multiple wavelength optical pumping scheme to optimize output bandwidth are discussed. Use of the dual-core fiber amplifier showed no appreciable degradation to the coherence length of the seed laser. The signal intensity improvement of this amplifier is demonstrated on a multichannel in vivo OCT imaging system at 1060 nm.
一种新型（据我们所知）双核掺镱（Yb(3+)）光纤，作为光泵浦放大器，将 1060nm 扫频源激光的输出功率提升至 250mW 以上，同时提供 93nm 的波长调谐范围，用于光学相干断层扫描（OCT）成像。讨论了双核掺镱光纤放大器的设计及其多波长光泵浦方案，以优化输出带宽。双核光纤放大器的使用并未对种子激光的相干长度产生明显的劣化。在 1060nm 处的多通道体内 OCT 成像系统上，对该放大器的信号强度改善进行了演示。
