Abstract
We present a review of the helium spectroscopy, related to transitions between 23 S and 23 P states around 1083 nm. A detailed description of our measurements, that have produced the most accurate value of the 23 P 0–23 P 1 fine structure interval, is given. It could produce an accurate determination (34 ppb) of the fine structure constant α. Improvements in the experimental set up are presented. In particular, a new frequency reference of the laser system has been developed by frequency lock of a 1083 nm diode laser to iodine hyperfine transitions around its double of frequency. The laser frequency stability, at 1 s timescale, has been improved of, at least, two orders of magnitude, and even better for longer time scales. Simultaneous 3 He—4 He spectroscopy, as well as absolute frequency measurements of 1083 nm helium transitions can be allowed by using the I2-locked laser as frequency standard. We discuss the implication of these measurements for a new determination of the isotope and 23S Lamb shifts.
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References
P.J. Mohr and B.N. Taylor: Rev. Mod. Phys. 72, 351 (2000); J. Phys. Chem. Ref. Data 28, 1713 (1999)
V.W. Hughes: Comm. At. Mol. Phys. 1, 5 (1969)
E.W. Hagley, F.M. Pipkin: Phys. Rev. Lett. 72, 1172 (1994) S.R. Lundeen, F.M. Pipkin: Metrologia 22, 9 (1986)
F Minardi et al.: Phys. Rev. Lett. 82, 1112 (1999) P. Cancio et al.: ‘Precision spectroscopy of Helium’. In: Atomic Physics 16, International conference, Windsor-Canada, August 1998, ed. by W.E. Baylis, G.W.F. Drake (AIP, Woodbury, New York 1999) pp.42-57
P. Cancio et al.: ‘Fine structure constant α and precision laser spectroscopy of Helium’. In: Recent advances in Metrology and Fundamental constants, Proceedings of the International School of Physics “Enrico Fermi”, ed. By S. Leschiutta, T.J. Quinn (SIF, Bologna) in press
A. Kponou et al.: Phys. Rev. A 24, 264 (1981) W. Frieze et al.: Phys. Rev. A 24, 279 (1981)
D. Shiner., R. Dixson, P. Zhao: Phys. Rev. Lett. 72, 1802 (1994)
J. Castillega et al.: Phys. Rev. Lett. 84, 4321 (2000)
C.H. Storry, E.A. Hessels: Phys. Rev. A 58, R8 (1998)
C.H. Storry, M.C. George, E.A. Hessels: Phys. Rev. Lett. 84, 3274 (2000)
J. Wen. Ph.D. Thesis, Harvard University (1996)
W. Frieze et al: presented at The Hydrogen atom II meeting (unpublished)
G. Gabrielse: Private communication
M. Prevedelli et al.: Opt. Commun. 125, 231 (1996)
G. Giusfredi et al: J. Appl. Phys. 63, 1279 (1988)
F. Minardi et al.: Phys. Rev. A 60, 4164 (1999)
T. Zhang, Z.-C. Yan, G.W.F. Drake: Phys. Rev. Lett. 77, 1715 (1996)
T. Zhang, G.W.F. Drake: Phys. Rev. A 54, 4882 (1996)
K. Pachucki, presented at the conference Hydrogen Atom, 2 (unpublished); K. Pachucki, J. Sapirstein: Private communication
P. Cancio et al.: Opt. Commun 176, 453 (2000)
P. Cancio et al.: Appl. Phys. B 70, 763 (2000)
N. Picque et al.: J. Opt. Soc. Ame. B, (2000) submitted
G.W.F. Drake: this edition, pp. 57–78
S.A. Diddams et al.: Phys. Rev. Lett. 84, 5102 (2000)
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Pastor, P.C., De Natale, P., Giusfredi, G., Pavone, F.S., Inguscio, M. (2001). High Precision Measurements on Helium at 1083 nm. In: Karshenboim, S.G., Bassani, F., Pavone, F., Inguscio, M., Hänsch, T. (eds) The Hydrogen Atom. Lecture Notes in Physics, vol 570. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45395-4_15
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DOI: https://doi.org/10.1007/3-540-45395-4_15
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