2 papers
physics.atom-ph2026
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…
physics.optics2024
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…