Abstract
A pulsed (5-ns), narrow-band (135-MHZ) laser system operating at 589.1 nm has been used to excite naturally occurring sodium atoms in the mesopause region of the atmosphere (80-105 km). By monitoring the ratio of fluorescence intensities excited at frequencies sensitive to Doppler-broadening (temperature changes), at vc = 188 MHZ (crossover resonance) and va =−652 MHZ (D2a peak) measured from the Na D2 transition at 589.1 nm, the profiles of atmospheric temperature and Na density in the mesopause region (80-110 km) can be measured by such a lidar from ground.1,2
© 1995 Optical Society of America
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