Tunable Infrared Laser Spectroscopy of Atmospheric Water Vapor

See allHide authors and affiliations

Science  25 Aug 1972:
Vol. 177, Issue 4050, pp. 694-695
DOI: 10.1126/science.177.4050.694


Absorption lines in the v, band of water vapor at 6.3 micrometers have been fully resolved by using a tunable semiconductor laser. Three attnospheric water vapor lines near 5.32 micrometers were studied in detail and found to have linle widths two to four times narrower than the width calculated by Benedict and Kaplan.