Abstract
Taking advantage of the 1.5 μm lidar, a series of 1.5 μm micro-pulse lidars have been developed at the University of Science and Technology of China, in Hefei, China. According to the different characteristics of three kinds of single-photon detectors at 1.5 μm, namely superconducting nanowire single-photon detector, up-conversion SPDs and InGaAs/InP single-photon avalanche diodes, different kinds of lidar systems have been constructed to realize the detection of atmospheric visibility, cloud, depolarization, wind field at the atmospheric boundary layer.
Highlights
The cathode material of a detector is selected according to its sensitivity versus the working wavelength
Traditional micro-pulse lidar is thought quite unsuitable for long-range aerosol detection with high temporal/spatial resolution [1]
Because the quantum efficiency is usually treated as a constant, Using single-photon detectors (SPDs) at 1.5 μm can greatly improve the performance of aerosol lidars
Summary
The cathode material of a detector is selected according to its sensitivity versus the working wavelength. InGaAs avalanche photodiode (APD) is used for 1.5-μm detection commonly. Traditional micro-pulse lidar is thought quite unsuitable for long-range aerosol detection with high temporal/spatial resolution [1]. By optimizing different single-photon detectors at 1.5 μm, different micro-pulse lidars incorporating a fiber laser and a small optical antenna are proposed and demonstrated for longrange atmospheric parameters detection during day and night
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call