Title :
About the accuracy evaluation of the LPTF cesium fountain frequency standard
Author :
Ghezali, S. ; Laurent, Philippe ; Lea, Stephen ; Santarelii, G. ; Bahoura, Mohammed ; Simon, Eric ; Weyers, Sascha ; Szymaniec, Krzysztof
Author_Institution :
LPTF/BNM, Obs. de Paris, Meudon, France
Abstract :
Summary form only given, as follows.Summary form only given, as follows. A laser cooled atomic Cs fountain frequency standard is now in operation at LPTF. Actually, the measured frequency stability is /spl sim/2.10/sup -13//spl tau//sup -1/2/ limited by the frequency noise of the local oscillator. Measurements are currently limited at 2.10/sup -15/ given by the resolution of the H-maser. The preliminary accuracy, estimated at 3.10/sup -15/, is discussed. The advance of the 2D Raman velocity selection is given.
Keywords :
atomic clocks; caesium; frequency measurement; frequency stability; laser beam applications; measurement standards; 2D Raman velocity selection; Cs; LPTF cesium fountain frequency standard; accuracy evaluation; frequency noise; frequency stability; laser cooled atomic frequency standard; local oscillator; maser resolution; Atom lasers; Atomic beams; Atomic measurements; Current measurement; Frequency measurement; Laser noise; Local oscillators; Noise measurement; Stability;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.547323
