Yafan Shi, Zhaohui Li, Baicheng Feng, Peiqin Yan, Bingcheng Du, Hui Zhou, Haifeng Pan, Guang Wu. Enhanced solar-blind ultraviolet single-photon detection with a Geiger-mode silicon avalanche photodiode[J]. Chinese Optics Letters, 2016, 14(3): 030401
- Chinese Optics Letters
- Vol. 14, Issue 3, 030401 (2016)
Fig. 1. Experimental setup. Xe Lamp, xenon lamp; L1, L2, UV fused silica lenses; Dia1, 2, diaphragm; Attn, attenuator. Insets: (a) Collecting device based on a concave mirror. (b) Collecting device based on a coated level hemisphere.
Fig. 2. Spectral response of the Si APD and the PMT.
Fig. 3. Increase of the detection efficiency and the enhancement factor of the Si APD with the collecting concave mirror at different wavelengths.
Fig. 4. Si APD counting rate as a function of the incident photon intensity at 280 nm.
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Table 1. Parameters of the Collecting Device and the Detection Efficiency
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