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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 18, Iss. 10 — Oct. 1, 2001
  • pp: 1416–1422

Rotation dependence of the excited-state electric quadrupole hyperfine interaction by high-resolution laser spectroscopy of 127I2

Feng-Lei Hong, Jun Ishikawa, Atsushi Onae, and Hirokazu Matsumoto  »View Author Affiliations

JOSA B, Vol. 18, Issue 10, pp. 1416-1422 (2001)

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Hyperfine structures of the R(58)320,P(55)320, and P(104)340 transitions of molecular iodine near 532 nm are measured by heterodyne beating of two I2-stabilized lasers. The measured hyperfine splittings are fitted to a four-term Hamiltonian, which includes the electric quadrupole, spin–rotation, tensor spin–spin, and scalar spin–spin interactions, with an accuracy of ∼600 Hz for the R(58)320 and P(55)320 transitions. Highly accurate hyperfine constants are obtained from this fit. The rotation dependence of the excited state (the B state, v=32) electric quadrupole constant eQq is found to be eQq(J)=-544.049(14)-0.0002110(43)J(J+1) MHz. The observed hyperfine transitions are good candidates for an optical frequency reference in the 532-nm region.

© 2001 Optical Society of America

OCIS Codes
(020.2930) Atomic and molecular physics : Hyperfine structure
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.3580) Lasers and laser optics : Lasers, solid-state
(300.6360) Spectroscopy : Spectroscopy, laser
(300.6390) Spectroscopy : Spectroscopy, molecular
(300.6460) Spectroscopy : Spectroscopy, saturation

Feng-Lei Hong, Jun Ishikawa, Atsushi Onae, and Hirokazu Matsumoto, "Rotation dependence of the excited-state electric quadrupole hyperfine interaction by high-resolution laser spectroscopy of 127I2," J. Opt. Soc. Am. B 18, 1416-1422 (2001)

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