Shentu Guo-Liang, Pelc Jason S, Wang Xiao-Dong, Sun Qi-Chao, Zheng Ming-Yang, Fejer M M, Zhang Qiang, Pan Jian-Wei
Shanghai Branch, National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Shanghai, 201315, China.
Opt Express. 2013 Jun 17;21(12):13986-91. doi: 10.1364/OE.21.013986.
We demonstrate up-conversion single-photon detection for the 1550-nm telecommunications band using a PPLN waveguide, long-wavelength pump, and narrowband filtering using a volume Bragg grating. We achieve total-system detection efficiency of around 30% with noise at the dark-count level of a Silicon APD. Based on the new detector, a single-pixel up-conversion infrared spectrometer with a noise equivalent power of -142 dBm Hz(-1/2) was demonstrated, which was as good as a liquid nitrogen cooled CCD camera.
我们展示了使用周期极化铌酸锂（PPLN）波导、长波长泵浦以及体布拉格光栅进行窄带滤波，实现对1550纳米电信波段的上转换单光子探测。我们实现了约30%的全系统探测效率，噪声处于硅雪崩光电二极管（Si APD）暗计数水平。基于这种新型探测器，展示了一种噪声等效功率为-142 dBm Hz^(-1/2) 的单像素上转换红外光谱仪，其性能与液氮冷却的电荷耦合器件（CCD）相机相当。
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