We present a highly stable polarization-maintained supercontinuum (SC) using a setup solely based on ZBLAN (ZrF₄-BaF₂-LaF₃-AlF₃-NaF) fibers. The pumping source consists of a femtosecond master oscillator fiber amplifier based on thulium-doped ZBLAN fibers. It provides multi-watts of output power with the center wavelength of 1920 nm at 1 MHz repetition rate. The SC generated by pumping an elliptical core passive single-mode ZBLAN fiber spans from 350 nm to 4.5 µm and exhibits high stability. We characterized the SC pulse using sum-frequency cross-correlation frequency resolved optical gating.

中文翻译：

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仅基于ZBLAN光纤的高度相干的多倍频程偏振保持超连续谱生成

我们使用仅基于ZBLAN（ZrF ₄ -BaF ₂ -LaF ₃ -AlF ₃ -AlF ₃ -NaF）光纤的设置来提供高度稳定的偏振保持超连续谱（SC）。泵浦源由基于掺Z的ZBLAN光纤的飞秒主振荡器光纤放大器组成。它以1 MHz的重复频率提供1920纳米中心波长的多瓦输出功率。泵浦椭圆芯无源单模ZBLAN光纤产生的SC跨度在350 nm至4.5 µm之间，并具有很高的稳定性。我们使用和频互相关频率分辨光学门控来表征SC脉冲。