Hyperfine structures of the R(122) 35-0 and P(84)33-0 transitions of ~127I_2 near 532nm

摘要

Hyperfine structures of the R(122) 35-0 and P(84) 33-0 transitions of molecular iodine near 532nm are observed at the red end of the tuning range of the frequency-doubled Nd:YAG laser. Frequency separations between the hyperfine components are measured by observing the heterodyne beat between two I_2-stabilized lasers. The measured hyperfine splittings are fit to a four-term Hamiltonian, which includes the electric quadrupole, spin-rotation, tensor spin-spin, and scalar spin-spin interactions, with an accuracy of about 660 Hz.