Publications by authors named "Xue-wu Cheng"
Due to the severe interference from strong solar background light on the received signal, daytime ground-based lidar observation of the sodium (Na) layer is challenging. In this paper, a Na lidar permitting full-diurnal-cycle observation of the metal Na layer over Beijing, China (40.5°N, 116°E) was reported.
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- A solid-state sodium Doppler lidar system has been developed at YanQing Station in Beijing for measuring wind and temperature in the mesopause region.
- This system utilizes a unique combination of Nd:YAG pulse lasers to produce a 589 nm pulse laser and employs a fiber amplifier for improved performance.
- Its compact design and reduced maintenance needs make the lidar suitable for transportable and unattended operations, with preliminary observational results successfully demonstrated.
[Spectroscopic study on the time evolution behaviors of the laser-induced air plasma].
Guang Pu Xue Yu Guang Pu Fen Xi
June 2003
The time-resolved spectra of the air-breakdown plasma produced by the 1.06 microns beam of a Nd:YAG laser were investigated by using the time-delayed spectra and the spectral line evolution methods. The time evolutions of the short wavelength band and long wavelength band of the continuous spectra of the air-breakdown plasma have been measured.
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