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Proceedings Paper

Background gas induced collision shift for a Sr spin-forbidden transition
Author(s): Tetsuya Ido; Nobuyasu Shiga; Ying Li; Hiroyuki Ito; Shigeo Nagano; Atsushi Yamaguchi; Michi Koide; Hiroshi Ishijima; Mizuhiko Hosokawa; Katarzyna Bielska; Roman Ciurylo
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Paper Abstract

Buffer gas induced collision shift for the 88Sr 1S0-3P1 transition is investigated by precision saturation spectroscopy of thermal gas in a heat cell. The cell was filled with rare gases of helium, neon, argon, and xenon as buffer gases. Helium showed the largest fractional shift coefficient of 1.6x10-9 Torr-1. The disagreement between our experiments and simple impact calculations indicates effective atom losses from zero-velocity class which contributes to saturated absorption spectroscopy. The result could be useful to evaluate the background gas collision shift of Sr lattice clocks. Keywords: collision, saturated absorption spectroscopy, lattice clock, optical clock, density shift

Paper Details

Date Published: 25 August 2009
PDF: 8 pages
Proc. SPIE 7431, Time and Frequency Metrology II, 74310F (25 August 2009); doi: 10.1117/12.825471
Show Author Affiliations
Tetsuya Ido, National Institute of Information and Communications Technology (Japan)
Japan Science and Technology Agency (Japan)
Nobuyasu Shiga, National Institute of Information and Communications Technology (Japan)
Ying Li, National Institute of Information and Communications Technology (Japan)
Hiroyuki Ito, National Institute of Information and Communications Technology (Japan)
Shigeo Nagano, National Institute of Information and Communications Technology (Japan)
Atsushi Yamaguchi, National Institute of Information and Communications Technology (Japan)
Michi Koide, National Institute of Information and Communications Technology (Japan)
Hiroshi Ishijima, National Institute of Information and Communications Technology (Japan)
Mizuhiko Hosokawa, National Institute of Information and Communications Technology (Japan)
Katarzyna Bielska, Nicolaus Copernicus Univ. (Poland)
Roman Ciurylo, Nicolaus Copernicus Univ. (Poland)


Published in SPIE Proceedings Vol. 7431:
Time and Frequency Metrology II
Tetsuya Ido; Derryck T. Reid, Editor(s)

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