Atomic mercury in the atmosphere was detected by the differential-absorption lidar technique. Laser light at the mercury resonance wavelength of 253.65 nm was generated by anti-Stokes shifting in H2 of the frequency-doubled output from a Nd:YAG-pumped dye laser. The measurements demonstrate that a concentration of 4 ng/m3, corresponding to a typical background value, can be detected if a path length of 2 × 1 km is used.
© 1982 Optical Society of America
Original Manuscript: January 4, 1982
Published: May 1, 1982
M. Aldén, H. Edner, and S. Svanberg, "Remote measurement of atmospheric mercury using differential absorption lidar," Opt. Lett. 7, 221-223 (1982)