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Doppler-Free Two-Photon Spectroscopy of Hydrogen 1S-2S
Work supported by the National Science Foundation under Grant No. MPS74-14786A01, by the U. S. Office of Naval Research under Contract No. ONR-0071, and by a Grant from the National Bureau of Standards.
https://doi.org/10.1142/9789812813787_0002Cited by:0 (Source: Crossref)
Abstract:
We have observed the 1S-2S transition in atomic hydrogen and deuterium by Doppler-free two-photon spectroscopy, using a frequency-doubled pulsed dye laser at 2430 Å. Simultaneous recording of the absorption spectrum of the Balmer-β line at 4860 Å, using the fundamental dye-laser output, allowed us to precisely compare the energy intervals 1S-2S and 2S,P-4S,P,D and to determine the Lamb shift of the 1S ground state to be 8.3±0.3 GHz (D) and 8.6±0.8 GHz (H).
