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Phys. Rev. Lett. 91, 053001 (2003) [4 pages]

Recoil-Free Spectroscopy of Neutral Sr Atoms in the Lamb-Dicke Regime

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Tetsuya Ido1,* and Hidetoshi Katori1,2,†
1Cooperative Excitation Project, ERATO, Japan Science and Technology Corporation, 4-1-8 Hon-cho, Kawaguchi, Saitama 332-0012, Japan
2Engineering Research Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

Received 1 March 2003; published 29 July 2003

Recoil-free as well as Doppler-free spectroscopy was demonstrated on the 1S0-3P1 transition of Sr atoms confined in a one-dimensional optical lattice. By investigating the wavelength and polarization dependence of the ac Stark shift acting on the 1S0 and 3P1(mJ=0) states, we determined the wavelength where the Stark shifts for both states coincide. This Stark-free optical lattice, allowing the purturbation-free spectroscopy of trapped atoms, may keep neutral-atom based optical standards competitive with single-ion standards.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.053001
DOI:
10.1103/PhysRevLett.91.053001
PACS:
32.80.Pj, 32.30.Jc, 32.60.+i, 32.70.Jz

*Current address: JILA, University of Colorado, CO 80309-0440, USA.

†Corresponding author.

Electronic address: katori@amo.t.u-tokyo.ac.jp

 
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