Title :
Spectroscopy and hyperfine clock frequency shift measurements in Cs vapor cells coated with octadecyltrichlorosilanes (OTS)
Author :
Hafiz, Moustafa Abdel ; Maurice, Vincent ; Chutani, Ravinder ; Passilly, Nicolas ; Gorecki, Christophe ; Guerandel, Stephane ; De Clercq, Emeric ; Boudot, Rodolphe
Author_Institution :
Univ. de Franche-Comte, Besancon, France
Abstract :
We report the characterization using coherent population trapping (CPT) spectroscopy of an octadecyltrichlorosilane (OTS)-coated centimeter-scale Cs vapor cell. The linewidth of the narrow CPT resonance is compared to the linewidth of an evacuated Cs cell of similar size. The Cs-OTS adsorption energy is measured to be (0.42 ± 0.03) eV. A hyperfine population lifetime, T1 of 1.6 ms is reported, corresponding to about 37 useful bounces. Ramsey CPT fringes are detected using a pulsed CPT interrogation scheme.
Keywords :
adsorption; atomic clocks; caesium; coatings; energy measurement; frequency measurement; CPT spectroscopy; Cs; OTS; Ramsey CPT fringe detection; adsorption energy measurement; centimeter-scale Cs vapor cell; coating; coherent population trapping spectroscopy; hyperfine clock frequency shift measurement; narrow CPT resonance; octadecyltrichlorosilanes; pulsed CPT interrogation scheme; time 1.6 ms; Pump lasers; Sociology; Statistics;
Conference_Titel :
Frequency Control Symposium & the European Frequency and Time Forum (FCS), 2015 Joint Conference of the IEEE International
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4799-8865-5
DOI :
10.1109/FCS.2015.7138787
