Pa. Jungner et al., ABSOLUTE FREQUENCY OF THE MOLECULAR-IODINE TRANSITION R(56)32-0 NEAR 532 NM, IEEE transactions on instrumentation and measurement, 44(2), 1995, pp. 151-154
The absolute frequency of the hyperfine component a(10) in the transit
ion R(56)32-0 of iodine has been measured using the D-2 line in Rb at
780 nm and an iodine-stabilized 633-nm He-Ne laser as references. This
measurement provides a secondary frequency standard within the tuning
,range of a doubled Nd:YAG laser. The measured frequency of the a(10)
component is 563 260 223.480 MHz +/- 70 kHz.