The optical Ca frequency standard

Author

Riehle, F. ; Schnatz, H. ; Lipphardt, B. ; Zinner, G. ; Trebst, T. ; Binnewies, T. ; Wilpers, G. ; Helmcke, J.

Author_Institution

Phys. Tech. Bundesanstalt, Braunschweig, Germany

Volume

2

fYear

1999

fDate

1999

Firstpage

700

Abstract

PTB operates an optical wavelength/frequency standard by stabilizing the frequency of a laser to the intercombination transition ³P₁-¹S₀ of laser cooled ballistic atomic ⁴⁰Ca at λ≅657 nm. The uncertainty of the standard was evaluated by the use of two independent systems. After comparison of the optical frequency with the Cs atomic clock the frequency is determined to be 455 986 240 494.13 (12) kHz

Keywords

atom-photon collisions; atomic clocks; calcium; frequency standards; laser cooling; laser frequency stability; optical variables measurement; quantum optics; radiation pressure; 657 nm; ³P₁-¹S₀; ⁴⁰Ca; Ca; Cs; Cs atomic clock; Physikalisch Technische Bundesanstalt; frequency; independent systems; intercombination transition; laser cooled ballistic atom; laser frequency stability; optical Ca frequency standard; optical frequency; optical wavelength/frequency standard; standard; uncertainty; Atom lasers; Atom optics; Atomic beams; Atomic measurements; Charge carrier processes; Frequency; Laser beams; Laser stability; Laser transitions; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European

Conference_Location

Besancon

ISSN

1075-6787

Print_ISBN

0-7803-5400-1

Type

conf

DOI

10.1109/FREQ.1999.841401

Filename

841401