title: Extension of absolute-frequency measurements to the visible: frequencies of ten hyperfine components of iodine.
abstract: Direct-frequency measurements have been extended into the visible region of the electromagnetic spectrum. The visible frequencies were synthesized by generating the second harmonic of the recently measured 260-THz (20)Ne, 1.15-microm laser with a LiNbO(3) crystal. The absolute frequencies of ten hyperfine components of (127)I(2) near 520 THz are reported.
authors.forename: K M
authors.initials: KM
authors.lastname: Baird
authors.forename: K M
authors.initials: KM
authors.lastname: Evenson
authors.forename: G R
authors.initials: GR
authors.lastname: Hanes
authors.forename: D A
authors.initials: DA
authors.lastname: Jennings
authors.forename: F R
authors.initials: FR
authors.lastname: Petersen