| 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) | C8-271 - C8-281 | |
| DOI | https://doi.org/10.1051/jphyscol:1981834 | |
Troisième Symposium sur les Etalons de Fréquence et la Métrologie / Third Symposium on Frequency Standards and Metrology
J. Phys. Colloques 42 (1981) C8-271-C8-281
DOI: 10.1051/jphyscol:1981834
Frequency and Time Standards Group, Time and Frequency Division, National Bureau of Standards, Boulder, Colorado, U.S.A.
J. Phys. Colloques 42 (1981) C8-271-C8-281
DOI: 10.1051/jphyscol:1981834
IMPACT OF LASERS ON PRIMARY FREQUENCY STANDARDS AND PRECISION SPECTROSCOPY
L.L. Lewis, M. Feldman et J.C. BergquistFrequency and Time Standards Group, Time and Frequency Division, National Bureau of Standards, Boulder, Colorado, U.S.A.
Abstract
Lasers available at new wavelengths, powers, linewidths, and stabilities have made possible advances in precision atomic frequency standards and spectroscopy. Laser spectrometers with resolving power exceeding 1011 have been constructed and used to measure the photon recoil structure of spectral lines and in new tests of relativity. Recent progress in frequency stabilation methods and in laser-cooled ions indicates the possibility of an optical frequency standard with an accuracy and stability of less than 10-15. Diode lasers may enable the construction of an optically-pumped cesium standard with an order-of-magnitude improvement in accuracy over existing primary standards.