title: Frequency measurement of the 260-THz (1.15-microm) He-Ne laser.
abstract: Absolute infrared frequency measurement has been extended to 260 THz with the measurement of the strong 1.15-microm laser line in (20)Ne. The frequency was synthesized in nonlinear crystals of CdGeAs(2) and Ag(3)AsS(3) from stabilized CO(2) lasers and the 1.5-microm laser line in (20)Ne. The measured frequency is nu(20)Ne, 1.15 microm = 260.103 284(30) THz.
authors.forename: D A
authors.initials: DA
authors.lastname: Jennings
authors.forename: F R
authors.initials: FR
authors.lastname: Petersen
authors.forename: K M
authors.initials: KM
authors.lastname: Evenson