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20 April 2024

» arxiv » 1304.7871

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Ultralow noise up-conversion detector and spectrometer at telecom band
Guo-Liang Shentu ; Jason S. Pelc ; Xiao-Dong Wang ; Qi-Chao Sun ; Ming-Yang Zheng ; M. M. Fejer ; Qiang Zhang ; Jian-Wei Pan ;
Date:	30 Apr 2013
Abstract:	We demonstrate upconversion single-photon detection for the 1550-nm 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 was demonstrated, which was better than liquid nitrogen cooled InGaAs arrary.
Source:	arXiv, 1304.7871
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