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Coincidence-pumping upconversion detector based on passively synchronized fiber laser system
IEEE Photonics Technology Letters ( IF 2.6 ) Pub Date : 2020-02-15 , DOI: 10.1109/lpt.2020.2965146
Weiyan Kang , Bowen Li , Yan Liang , Qiang Hao , Ming Yan , Kun Huang , Heping Zeng

We experimentally demonstrated a high-performance frequency upconversion detector for telecom-band photons based on a passively synchronized fiber laser system. The involved coincidence pumping technique enabled to spectrally convert the pulsed infrared photons into the visible regime with a conversion efficiency of 72%. The overall detection efficiency of the upconversion detector reached to 30% with a low noise equivalent power of $3\times 10^{-17}\,\,\text {W/Hz}^{1/2}$ . In contrast to previous demonstrations, the whole upconversion detection system was constructed in an all-polarization-maintaining fiber structure, thus favoring substantial improvement of compactness and robustness. Moreover, the long-term stability was manifested by at least ten-hour operation with a relative fluctuation of count rates as small as 0.26%. The achieved features here would be desirable in many practical applications requiring efficient and robust coherent manipulation of pulsed optical fields by nonlinear frequency conversion.

中文翻译:

基于被动同步光纤激光系统的符合泵浦上变频探测器

我们通过实验证明了一种基于被动同步光纤激光器系统的用于电信波段光子的高性能频率上变频探测器。所涉及的重合泵浦技术能够将脉冲红外光子光谱转换为可见光区域,转换效率为 72%。上变频检测器的整体检测效率达到30%,低噪声等效功率为$3\times 10^{-17}\,\,\text {W/Hz}^{1/2}$ 。与之前的演示相比,整个上转换检测系统构建在全偏振保持光纤结构中,从而有利于紧凑性和鲁棒性的显着提高。此外,长期稳定性通过至少 10 小时的操作表现出来,计数率的相对波动小至 0.26%。
更新日期:2020-02-15
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