77 citations · 122 across the 6 of their papers we have counts for
6 papers
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…
Interferometric Differential High-Frequency Lock-In Probe for Laser-Induced Vacuum Birefringence
R. G. Bullis, U. D. Jentschura, D. C. Yost
We propose a measurement of laser-induced vacuum birefringence through the use of pulsed lasers coupled to femtosecond optical enhancement cavities. This measurement technique feat…
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,…
Cavity enhanced DUV laser for two-photon cooling of atomic hydrogen
Samuel F. Cooper, Zakary Burkley, Adam D. Brandt +2
We demonstrate a \SI{650}{\mW} \SI{243}{\nm} continuous-wave laser coupled to a linear optical enhancement cavity. The enhancement cavity can maintain \SI{30}{\W} of intracavity…
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…