Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Entire DC Network
High-Resolution Saturation Spectroscopy Of Singly-Ionized Iron With A Pulsed Uv Laser, M. Ascoli, E. E. Eyler, David Kawall, David Demille
High-Resolution Saturation Spectroscopy Of Singly-Ionized Iron With A Pulsed Uv Laser, M. Ascoli, E. E. Eyler, David Kawall, David Demille
David Kawall
We describe the design and realization of a scheme for UV laser spectroscopy of singly-ionized iron (Fe II) with very high resolution. A buffer-gas cooled laser ablation source is used to provide a room-temperature plasma with a high density of Fe II. We combine this with a scheme for pulsed-laser saturation spectroscopy to yield sub-Doppler resolution. In a demonstration experiment, we have examined an Fe II transition near 260 nm, attaining a linewidth of about 250 MHz. The method is well suited to measure transition frequencies and hyperfine structure. It could also be used to measure small isotope shifts in …
Stark-Modulation Spectroscopy Of The B(1)[Π3] State Of Pbo, David Kawall, Y. V. Gurevich, C. Cheung, S. Bickman, Y. Jiang, D. Demille
Stark-Modulation Spectroscopy Of The B(1)[Π3] State Of Pbo, David Kawall, Y. V. Gurevich, C. Cheung, S. Bickman, Y. Jiang, D. Demille
David Kawall
We report detailed spectroscopic measurements of the X(0)[Σ+1](v=0)→B(1)[Π3](v=5) transition in PbO. Using a Stark-modulated laser absorption technique, we have measured the hyperfine constant of Pb207O in the B(1) state, as well as the B(1)(v=5) rotational constant, X−B isotope shifts, etc. The hyperfine constant of the B(1) state is of interest as a benchmark for calculations of PbO electronic structure related to experiments to search for the electric dipole moment of the electron.
Precision Zeeman-Stark Spectroscopy Of The Metastable A(1)[Σ+3] State Of Pbo, David Kawall, F. Bay, S. Bickman, Y. Jiang, D. Demille
Precision Zeeman-Stark Spectroscopy Of The Metastable A(1)[Σ+3] State Of Pbo, David Kawall, F. Bay, S. Bickman, Y. Jiang, D. Demille
David Kawall
The metastable a(1)[Σ+3] state of PbO has been suggested as a suitable system in which to search for the electric dipole moment of the electron. We report here the development of experimental techniques allowing high-sensitivity measurements of Zeeman and Stark effects in this system, similar to those required for such a search. We observe Zeeman quantum beats in fluorescence from a vapor cell of PbO, with shot-noise limited extraction of the quantum beat frequencies, high counting rates, and long coherence times. We argue that improvement in sensitivity to the electron electric dipole moment by at least 2 orders of magnitude …