High-Resolution Photoassociation Spectroscopy of Ultracold Ytterbium Atoms by Using the Intercombination Transition

Satoshi Tojo, Masaaki Kitagawa, Katsunari Enomoto, Yutaka Kato, Yosuke Takasu, Mitsutaka Kumakura, and Yoshiro Takahashi
Phys. Rev. Lett. 96, 153201 – Published 21 April 2006

Abstract

We observed high-resolution photoassociation spectra of laser-cooled ytterbium (Yb) atoms in the spin-forbidden S01P13 intercombination line. The rovibrational levels in the 0u+ state were measured for red detunings of the photoassociation laser ranging from 2.9 MHz to 1.97 GHz with respect to the atomic resonance. The rotational splitting of the vibrational levels near the dissociation limit were fully resolved due to the sub-MHz linewidth of the spectra in contrast to previous measurements using the spin-allowed singlet transition. In addition, from a comparison between the spectra of Yb174 and those of Yb176, a d-wave shape resonance for Yb174 is strongly suggested.

    • Received 17 October 2005

    DOI:https://doi.org/10.1103/PhysRevLett.96.153201

    ©2006 American Physical Society

    Authors & Affiliations

    Satoshi Tojo1,2, Masaaki Kitagawa1, Katsunari Enomoto1, Yutaka Kato1, Yosuke Takasu3, Mitsutaka Kumakura1,2, and Yoshiro Takahashi1,2,*

    • 1Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
    • 2CREST, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
    • 3Department of Electronic Science and Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8530, Japan

    • *To whom correspondence should be addressed. Electronic address: yitk@scphys.kyoto-u.ac.jp

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    Issue

    Vol. 96, Iss. 15 — 21 April 2006

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