title: Ultralow noise up-conversion detector and spectrometer for the telecom band.
abstract: 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.
authors.affiliation: Shanghai Branch, National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Shanghai, 201315, China.
authors.forename: Guo-Liang
authors.initials: GL
authors.lastname: Shentu
authors.forename: Jason S
authors.initials: JS
authors.lastname: Pelc
authors.forename: Xiao-Dong
authors.initials: XD
authors.lastname: Wang
authors.forename: Qi-Chao
authors.initials: QC
authors.lastname: Sun
authors.forename: Ming-Yang
authors.initials: MY
authors.lastname: Zheng
authors.forename: M M
authors.initials: MM
authors.lastname: Fejer
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Pan
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D012031:Refractometry / Q000295:instrumentation*; D059629:Signal-To-Noise Ratio; D013057:Spectrum Analysis / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*; D014159:Transducers