77 citations · 122 across the 6 of their papers we have counts for
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Precision Spectroscopy of 2S-nS Transitions in Atomic Hydrogen: A Determination of the Proton Charge Radius
R. G. Bullis, W. L. Tavis, M. R. Weiss +4
We present absolute frequency measurements of 2S_{1/2}-nS_{1/2} two-photon transitions with n = 8, 9, and 10 in a cryogenic beam of atomic hydrogen. Each transition has been measur…
Precision Rydberg State Spectroscopy with Slow Electrons and Proton Radius Puzzle
Ulrich D. Jentschura, Dylan C. Yost
The so-called proton radius puzzle (the current discrepancy of proton radii determined from spectroscopic measurements in ordinary versus muonic hydrogen) could be addressed via an…
Measurement of the SD transition in hydrogen
A. D. Brandt, S. F. Cooper, C. Rasor +3
We present a measurement of the hydrogen SD transition performed with a cryogenic atomic beam. The measured resonance frequency is kHz,…
Yb fiber amplifier at 972.5 nm with frequency quadrupling to 243.1 nm
Z. Burkley, C. Rasor, S. F. Cooper +2
We demonstrate a continuous-wave ytterbium-doped fiber amplifier which produces 6.3 W at a wavelength of 972.5 nm. We frequency quadruple this source in two resonant doubling stage…