| Numéro |
J. Phys. Colloques
Volume 42, Numéro C8, Décembre 1981
Troisième Symposium sur les Etalons de Fréquence et la Métrologie / Third Symposium on Frequency Standards and Metrology
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|---|---|---|
| Page(s) | C8-15 - C8-19 | |
| DOI | https://doi.org/10.1051/jphyscol:1981802 | |
Troisième Symposium sur les Etalons de Fréquence et la Métrologie / Third Symposium on Frequency Standards and Metrology
J. Phys. Colloques 42 (1981) C8-15-C8-19
DOI: 10.1051/jphyscol:1981802
1 Laboratoire de Physique des Lasers (Associé au C. N. R. S., L.A. 282), Université Paris-Nord, Avenue J.B. Clément, 93430 Villetaneuse, France
2 Istituto per la Ricerca Scientifica e Tecnologica and Unità CNR-GNSM, Dipartimento di Fisica, Università di Trento, 3805 Povo (TN), Italia.
3 Physics and Chemistry Department, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1.
J. Phys. Colloques 42 (1981) C8-15-C8-19
DOI: 10.1051/jphyscol:1981802
OBSERVATION OF OPTICAL RAMSEY FRINGES IN THE 10 µm SPECTRAL REGION USING A SUPERSONIC BEAM OF SF6
Ch. J. Bordé1, S. Avrillier1, A. Van Lerberghe1, Ch. Salomon1, D. Bassi2 et G. Scoles2, 31 Laboratoire de Physique des Lasers (Associé au C. N. R. S., L.A. 282), Université Paris-Nord, Avenue J.B. Clément, 93430 Villetaneuse, France
2 Istituto per la Ricerca Scientifica e Tecnologica and Unità CNR-GNSM, Dipartimento di Fisica, Università di Trento, 3805 Povo (TN), Italia.
3 Physics and Chemistry Department, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1.
Abstract
We report a first observation of optical Ramsey fringes in the 10 µm spectral region using a supersonic seeded beam of 7% SF6 in He, illuminated by a CO2 laser in spatially-separated field zones. We have used either three standing waves or four travelling waves and obtained highly contrasted fringes with a 23 kHz half-width corresponding to a 5 mm distance between zones.