Rotation dependence of electric quadrupole hyperfine interaction in the ground state of molecular iodine by high-resolution laser spectroscopy

Citation
Fl. Hong et al., Rotation dependence of electric quadrupole hyperfine interaction in the ground state of molecular iodine by high-resolution laser spectroscopy, J OPT SOC B, 18(3), 2001, pp. 379-387
Citations number
44
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
ISSN journal
07403224 → ACNP
Volume
18
Issue
3
Year of publication
2001
Pages
379 - 387
Database
ISI
SICI code
0740-3224(200103)18:3<379:RDOEQH>2.0.ZU;2-8
Abstract
Doppler-free high-resolution spectroscopy is applied to molecular iodine at 532 nm by Nd:YAG lasers. The main hyperfine components as well as the cros sover lines are measured for R(56)32-0 and P(54)32-0 transitions by heterod yne beating of two I-2-stabilized lasers. The measured hyperfine splittings including both main and crossover lines are fitted to a four-term Hamilton ian, which includes the electric quadrupole, spin-rotation, tensor spin-spi n, and scalar spin-spin interactions, with an average deviation of similar to1 kHz. Absolute values of the electric quadrupole hyperfine constants for both the upper and the lower states are obtained. The rotation dependence of the ground-state (v" = 0) electric quadrupole constant eQq" is found to be eQq"(J) = -2452.556(2) - 0.000164(5)J(J + 1) - 0.000000005(2)J(2)(J + 1) (2) MHz. (C) 2001 Optical Society of America.