Observation of adiabatic rapid passage utilizing narrow infrared saturation resonances
- 1 July 1975
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 27 (1), 21-24
- https://doi.org/10.1063/1.88273
Abstract
Population inversion by adiabatic rapid passage (ARP) utilizing narrow saturation resonances is observed for an infrared transition of NH3. The population change produced by sweeping the frequency of a strong saturating laser field through the center of a Doppler‐broadened absorption line is probed by a weak counterpropagating field as in a Lamb‐dip experiment. When the ARP conditions are satisfied, inversion of population is detected as amplification of the probe wave near the line center.Keywords
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