https://doi.org/10.1007/s100530070086
Precise frequency measurements of I2 lines in the near infrared by Rb reference lines
Institut für Quantenoptik, Universität Hannover,Welfengarten 1,
30167 Hannover, Germany
Received:
12
July
1999
Revised:
12
December
1999
Published online: 15 August 2000
Frequency measurements of 16 lines of I2 in the near infrared have been performed using
different Rb frequency references: diode lasers stabilised to the Rb D1 line at 377 THz,
to the
Rb D2 line at 384 THz and to the 5s
–5d
two photon
transition at 385 THz. The relative uncertainties of the measurements of
are
limited by the frequency stability of the laser source locked to I2 in the case of the
Rb D2 and two photon transition or by the accuracy of the Rb D1 line. The internal consistency
of calibrations of iodine lines is shown to be better than
by measurements of the
difference frequencies of calibrated iodine lines using four-wave mixing in laser diodes.
PACS: 33.20.Kf – Visible spectra
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
