A laser transmitter of differential absorption lidar for atmospheric pressure measurement
Received:September 29, 2018  Revised:May 25, 2019  download
Citation:
Hits: 167
Download times: 134
Author NameAffiliationE-mail
HONG Guang-Lie Key Laboratory of Space Active Optoelectronic Technology, Chinese Academy of Sciences, Shanghai 200083, China
Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China 
glhong@mail.sitp.ac.cn 
WANG Qin Key Laboratory of Space Active Optoelectronic Technology, Chinese Academy of Sciences, Shanghai 200083, China
University of Chinese Academy of Sciences, Beijing 100049, China 
 
XIAO Chun-Lei Key Laboratory of Space Active Optoelectronic Technology, Chinese Academy of Sciences, Shanghai 200083, China
Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China 
 
KONG Wei Key Laboratory of Space Active Optoelectronic Technology, Chinese Academy of Sciences, Shanghai 200083, China
Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China 
 
WANG Jian-Yu Key Laboratory of Space Active Optoelectronic Technology, Chinese Academy of Sciences, Shanghai 200083, China
Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China 
jywang@mail.sitp.ac.cn 
Abstract:Here is a transmitter for an oxygen-band differential absorption lidar that is tried for atmospheric pressure detection experiment. The laser transmitter is based on the structure of a seed-injected optical parametric oscillator and an optical parametric amplifier. As a slave oscillator, a ring cavity KTP optical parametric oscillator is used. As the master oscillator, is a continuous wave external cavity diode laser. Operating wavelength of the continuous wave external cavity diode laser was stabilized, by a PID (Proportional-Integral-Derivative) servo control loop composed of a high-precision wavelength meter. A continuous wave seed laser is injected into the optical parametric oscillator cavity, and the cavity length of the OPO (Optical Parametric Oscillator) resonator is locked by the “Ramp-Hold-Fire” technique. This laser transmitter has been proven to have the following properties: high optical frequency stability (30 MHz/rms), narrow linewidth (Fourier transform limited), and high pulse energy (≥45 mJ),which can be maintained during operation. The transmitter system operates with a single longitudinal mode, making it possible for differential absorption lidar to detect narrowband backscattering signals. Such systems therefore have the developing potential to accurately measure atmospheric pressure.
keywords:pressure measurement (120.5475)  DIAL  differential absorption lidar (280.1910)  parametric oscillators and amplifiers (190.4970)  injection-locked (140.3520)
View Full Text  HTML  View/Add Comment  Download reader

Copyright:《Journal of Infrared And Millimeter Waves》