Influence of Chirped Excitation Pulses in an Optical Clock With Ultracold Calcium Atoms

Autor:	Ch. Lisdat, H. Stoehr, C. Degenhardt, T. Nazarova, Uwe Sterr, Fritz Riehle
Rok vydání:	2005
Předmět:	Physics business.industry Physics::Optics chemistry.chemical_element Calcium Ringing Interferometry Optics chemistry Laser cooling Optical clock Physics::Atomic Physics Electrical and Electronic Engineering business Instrumentation Excitation
Zdroj:	IEEE Transactions on Instrumentation and Measurement. 54:771-775
ISSN:	0018-9456
DOI:	10.1109/tim.2004.843388
Popis:	We have investigated the influence of frequency chirps of the excitation pulses in a time-domain optical Ramsey-Borde/spl acute/ atom-interferometer used in an optical clock with ultracold calcium atoms. With optical interferometry, we identify a ringing in the excitation pulses to be responsible for the observed frequency shifts. Using these results, the uncertainty of the latest frequency measurement could be reduced to 1.2/spl middot/10/sup -14/.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::27ed7638d794f6f32dc2dff945063e2f https://doi.org/10.1109/tim.2004.843388 Zobrazit plný text záznamu