title: Superconducting nanowire single photon detector at 532 nm and demonstration in satellite laser ranging.
abstract: Superconducting nanowire single-photon detectors (SNSPDs) at a wavelength of 532 nm were designed and fabricated aiming to satellite laser ranging (SLR) applications. The NbN SNSPDs were fabricated on one-dimensional photonic crystals with a sensitive-area diameter of 42 μm. The devices were coupled with multimode fiber (ϕ = 50 μm) and exhibited a maximum system detection efficiency of 75% at an extremely low dark count rate of <0.1 Hz. An SLR experiment using an SNSPD at a wavelength of 532 nm was successfully demonstrated. The results showed a depth ranging with a precision of ~8.0 mm for the target satellite LARES, which is ~3,000 km away from the ground ranging station at the Sheshan Observatory.
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.forename: Sijing
authors.initials: S
authors.lastname: Chen
authors.forename: Lixing
authors.initials: L
authors.lastname: You
authors.forename: Wengdong
authors.initials: W
authors.lastname: Meng
authors.forename: Zhibo
authors.initials: Z
authors.lastname: Wu
authors.forename: Zhongping
authors.initials: Z
authors.lastname: Zhang
authors.forename: Kai
authors.initials: K
authors.lastname: Tang
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
authors.forename: Weijun
authors.initials: W
authors.lastname: Zhang
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Yang
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Liu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Xie