title: Reproducibility of helium-neon laser wavelengths at 633 nm.
abstract: Measurements, performed at NBS, NPL, and PTB, on helium-neon lasers stabilized on the Lamb dip, have shown that the wavelengths of these lasers fell within approximately 1 part in 10(7). Beyond this limit, different lasers were found to emit different wavelengths. In addition, the wavelength of a given laser may vary during the life of its discharge tube. Pressure shifts appear to be a major cause of these variations.
authors.affiliation: National Bureauof Standards, Washington, DC 20234, USA.
authors.forename: K D
authors.initials: KD
authors.lastname: Mielenz
authors.forename: K F
authors.initials: KF
authors.lastname: Nefflen
authors.forename: W R
authors.initials: WR
authors.lastname: Rowley
authors.forename: D C
authors.initials: DC
authors.lastname: Wilson
authors.forename: E
authors.initials: E
authors.lastname: Engelhard