Keywords

hydrogen neutral atoms, two-photon spectra, atom-photon collisions, semiconductor lasers

Abstract

We demonstrate a compact solid-state laser source for high-resolution two-photon spectroscopy of the 1S-2S transition in atomic hydrogen. The source emits up to 20 mW at 243 nm and consists of a 972 nm diode laser, a tapered amplifier, and two doubling stages. The diode laser is actively stabilized to a high-finesse cavity. We compare the new source to the stable 486 nm dye laser used in previous experiments and record 1S-2S spectra using both systems. With the solid-state laser system, we demonstrate a resolution of the hydrogen spectrometer of 6×10^11, which is promising for a number of high-precision measurements in hydrogenlike systems.

Original Publication Citation

N. Kolachevsky, J. Alnis, S. D. Bergeson, T. W. Haensch, “Compact solid-state laser source for 1S-2S spectroscopy in atomic hydrogen,” Physical Review A 73, 2181 (26). The original publication of this article can be found at http://link.aps.org/doi/1.113/PhysRevA.73.2181