Abstract

Accurate measurements of the wavenumbers of more than 100 lines in the ν₃ band of ozone have been made using a tunable semiconductor diode laser and a temperature-stabilized germanium etalon. The accuracy for the line centers is estimated to be within 3–10 MHz and compares well with the accuracy attained using more complicated heterodyne techniques. The relevance of these results to ozone monitoring instruments based on CO₂ lasers is discussed. The tunability of the diode laser is also exploited to monitor ambient concentrations of ozone in the presence of interfering molecular species. A detection sensitivity of ~0.5 ppb of ozone is demonstrated.

© 1979 Optical Society of America

High sensitivity point monitoring of atmospheric gases employing tunable diode lasers

J. Reid, B. K. Garside, J. Shewchun, M. El-Sherbiny, and E. A. Ballik
Appl. Opt. 17(11) 1806-1810 (1978)

High-resolution spectral measurement of the HNO₃ 5.9-μm band using a tunable diode laser

Clayton H. Bair and Philip Brockman
Appl. Opt. 18(24) 4152-4162 (1979)

High sensitivity pollution detection employing tunable diode lasers

J. Reid, J. Shewchun, B. K. Garside, and E. A. Ballik
Appl. Opt. 17(2) 300-307 (1978)

Tunable diode laser spectroscopy in the infrared: some practical considerations of techniques and calibration with ν₂ lines of HCN

S. Paddi Reddy, W. Ivancic, V. Malathy Devi, A. Baldacci, K. Narahari Rao, A. W. Mantz, and R. S. Eng
Appl. Opt. 18(9) 1350-1354 (1979)

High-Resolution Stark Spectroscopy in the ν₄ Band of NH₃ Using a Thin-Film Diode Laser

W. H. Weber, P. D. Maker, K. F. Yeung, and C. W. Peters
Appl. Opt. 13(6) 1431-1434 (1974)