Doppler-free two-photon spectrum of SF_6 for metrological purposes

6533b7d2fe1ef96bd125e1e2

RESEARCH PRODUCT

Doppler-free two-photon spectrum of SF_6 for metrological purposes

G. Pierre M. Khelkhal J. Legrand F. Herlemont

subject

Physics Photon Sideband Infrared business.industry Physics::Optics Atomic and Molecular Physics and Optics Metrology symbols.namesake Optics symbols Physics::Atomic Physics Absorption (electromagnetic radiation)Spectroscopy business Doppler effect Microwave

description

We report on our systematic investigation of strong Doppler-free two-photon absorption in the middle infrared. The absorption frequencies for two counterpropagating waves of identical frequencies are predicted. Five of these transitions were observed with sub-Doppler resolution with a sideband CO(2) laser and were measured with 10-kHz accuracy. Knowledge of these strong two-photon absorptions frequencies will allow the improvement of secondary frequency standards in the infrared.

year	journal	country	edition	language
1998-06-15	Optics Letters

https://doi.org/10.1364/ol.23.000957

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