Suppression of spurious phase shifts in an optical frequency standard

Author

Trebst, Tilmann ; Binnewies, Tomas ; Helmcke, Jürgen ; Riehle, Fritz

Author_Institution

Phys. Tech. Bundesanstalt, Braunschweig, Germany

Volume

50

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

535

Lastpage

538

Abstract

We have analyzed two types of time-domain atom-light interferometers realized by a series of beam splitting copropagating or counterpropagating laser pulses. We show how a combination of both types can be used to identify and to reduce spurious systematic phase shifts in a high-precision optical frequency standard. In particular, we have investigated theoretically and experimentally the influence of minute wave front curvatures and gravitational acceleration. Application of this technique to a Ca optical frequency standard leads to estimates of the relative uncertainty due to wave front curvature and gravitational acceleration of 8×10^-15 and 6.5×10^-16, respectively

Keywords

atomic clocks; frequency standards; interferometers; laser cooling; Ca; beam splitting laser pulses; copropagating laser pulses; counterpropagating laser pulses; gravitational acceleration; optical frequency standard; spurious phase shifts suppression; time-domain atom-light interferometers; wave front curvatures; Acceleration; Atom lasers; Atom optics; Atomic beams; Frequency estimation; Interferometers; Optical beam splitting; Optical interferometry; Time domain analysis; Time series analysis;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.918185

Filename

918185