Spatial phase variations in a TE/sub 011/ microwave cavity for use in a cesium fountain primary frequency standard

1993 ◽  
Vol 42 (2) ◽  
pp. 434-438 ◽  
Author(s):  
G. Vecchi ◽  
A. De Marchi
Keyword(s):  
Frequency Standard ◽  
Microwave Cavity ◽  
Spatial Phase ◽  
Phase Variations ◽  
Primary Frequency

OPTICAL CLOCKS AND FREQUENCY METROLOGY FOR SPACE

2007 ◽  
Vol 16 (12b) ◽  
pp. 2537-2540
Author(s):  
HUGH KLEIN
Keyword(s):  
European Space Agency ◽  
Frequency Standard ◽  
Optical Frequency ◽  
Fundamental Physics ◽  
Frequency Standards ◽  
Space Agency ◽  
Primary Frequency ◽  
Measurement Capabilities ◽  
Science Activities ◽  
Frequency Metrology

Optical frequency standards and femtosecond comb measurement capabilities now rival and in some cases exceed those of microwave devices, with further improvements anticipated. Opportunities are emerging for the application of highly stable and accurate optical frequency devices to fundamental physics space science activities, and the European Space Agency (ESA) has recently commissioned studies on different aspects of optical clocks in space. This paper highlights some examples, including the difficulty of comparing very accurate terrestrial clocks at different locations due to fluctuations of the geoid; by locating a primary frequency standard in space, one could avoid geoid-related gravitational redshifts.

The Navy's Primary Frequency Standard

1928 ◽  
Vol 16 (6) ◽  
pp. 778-793 ◽  
Author(s):  
R.H. Worrall ◽  
R.B. Owens
Keyword(s):  
Frequency Standard ◽  
Primary Frequency

Joint effort to commissioning a thermal cesium beam with optical pumping as primary frequency standard to Brazilian NMI

2014 ◽  
Author(s):  
Luiz Vicente Gomes Tarelho ◽  
Guilherme de Andrade Garcia ◽  
Antonio Carlos Baratto ◽  
Rodolfo Saboia Lima de Souza ◽  
Jair De Martin ◽  
...  
Keyword(s):  
Optical Pumping ◽  
Frequency Standard ◽  
Joint Effort ◽  
Primary Frequency

An Optically Pumped Primary Frequency Standard

1989 ◽  
pp. 116-119 ◽  
Author(s):  
R. E. Drullinger ◽  
J. H. Shirley ◽  
D. J. Glaze ◽  
L. Hollberg
Keyword(s):  
Frequency Standard ◽  
Optically Pumped ◽  
Primary Frequency

scholarly journals Accuracy evaluation of the primary frequency standard NIST-7

Metrologia ◽  
2002 ◽  
Vol 39 (1) ◽  
pp. 123-123 ◽  
Author(s):  
J H Shirley ◽  
W D Lee ◽  
R E Drullinger
Keyword(s):  
Frequency Standard ◽  
Accuracy Evaluation ◽  
Primary Frequency

The LPTF optically pumped primary frequency standard

1993 ◽  
Vol 42 (2) ◽  
pp. 457-461 ◽  
Author(s):  
E. de Clercq ◽  
G.D. Rovera ◽  
S. Bouzid ◽  
A. Clairon
Keyword(s):  
Frequency Standard ◽  
Optically Pumped ◽  
Primary Frequency
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