Absolute frequency atlas of molecular I/sub 2/ lines at 532 nm

With the aid of two iodine spectrometers, we report for the first time the measurement of the hyperfine splittings of the P(54)32-0 and R(57)32-0 transitions near 532 nm. Within the tuning range of the frequency-doubled Nd:YAG laser, modulation transfer spectroscopy recovers nine relatively strong ro-vibrational transitions of /sup 127/I/sub 2/ molecules with excellent SNR. These transitions are now linked together with their absolute frequencies determined by measuring directly the frequency gaps between each line and the R(56)32-0:/spl alpha//sub 10/ component. This provides an attractive frequency reference network in this wavelength region.