Doppler-Free Two-Photon Spectroscopy of Hydrogen by Theodor W. Hänsch and others

ID: doppler-free-two-photon-spectroscopy-of-hydrogen-by-theodor-w-hansch-and-others

Physical Review Letters 34, 307. Primary experimental paper.
The abstract reports a frequency-doubled pulsed dye laser near 243 nm and a simultaneous Balmer reference measurement.

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