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Applied Optics

Applied Optics


  • Vol. 17, Iss. 22 — Nov. 15, 1978
  • pp: 3555–3561

Continuously tunable ir lidar with applications to remote measurements of SO2 and CH4

R. A. Baumgartner and R. L. Byer  »View Author Affiliations

Applied Optics, Vol. 17, Issue 22, pp. 3555-3561 (1978)

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Remote atmospheric measurements of SO2 and CH4 were performed using a differential absorption lidar with a continuously tunable LiNbO3 parametric oscillator and amplifier source in the 1.4–4.0-μm region. A comparison of injected gas concentration in a remotely located sample chamber showed excellent agreement with a SO2 detection sensitivity of 0.9 ppm-km. An ambient level measurement of methane at the 1.66-μm overtone transition gave 3.9 ± 0.7 ppm Performance predictions indicate an order of magnitude gain in sensitivity is possible with recently demonstrated tunable source improvements. The wide tuning range capability allows the measurement of numerous other pollutant molecules in the 1.4–4.0-μm region.

© 1978 Optical Society of America

Original Manuscript: March 16, 1978
Published: November 15, 1978

R. A. Baumgartner and R. L. Byer, "Continuously tunable ir lidar with applications to remote measurements of SO2 and CH4," Appl. Opt. 17, 3555-3561 (1978)

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  17. The parametric oscillator control software was developed by Richard L. Herbst.
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  28. S. Brosnan, R. L. Byer, R. A. Baumgartner, “Linewidth and Threshold Studies of a LiNbO3 Optical Parametric Oscillator,” to be published.
  29. R. L. Byer, R. L. Herbst, “The Unstable Resonator Nd:YAG Laser Source,” to be published in Laser Focus (July1978).

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