The requirements of high spatial and temporal resolution and good signal statistics for middle atmosphere research prescribe Rayleigh lidar systems with high-energy, high repetition lasers, narrow laser beam divergences, narrow laser linewidths, high atmospheric transmittance with strong Rayleigh backscatter properties, large-aperture telescopes with submilliradian field of view, narrow spectral passband, and maximized optical throughput. These factors have been incorporated into the design of the ARCLITE Rayleigh lidar system.

System Layout

System Specifications

Transmitter: Spectra-Physics GCR5-30 Nd:YAG
Wavelength 532 nm
Pulse width 7 ns
Pulse repetition rate 30 Hz
Pulse energy 560 mJ
Average power 17 W
Seeded linewidth 105 MHz
Beam divergence (X4) 0.1 mrad
Receiver: Newtonian Telescope Configuration
Telescope diameter 92 cm
Focal length 203 cm
Field of view 0.5 mrad
Number of channels 2
1/2 l plate / Polarizer
Filter bandwidth:


10 Å
0.8 Å
Signal Processing:
Photon Counting Data Acquisition System
Data system SR430
Maximum count rate 100 MHz
Range bin size 192 m
Number of range bins 1024
On-line integration 1 min
Computer system PC 486-33
PMTs (2) EMI 9863B/100

Data catalogues
Data summary plots

Research activities

Asti Bhatt
SRI International
Phone (650) 859-3424