Vibration dependence of the tensor spin–spin and scalar spin–spin hyperfine interactions by precision measurement of hyperfine structures of 127 I 2 near 532 nm
Vibration dependence of the tensor spin–spin and scalar spin–spin hyperfine interactions by precision measurement of hyperfine structures of 127 I 2 near 532 nm
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DOI：
10.1364/josab.19.000946
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发表时间：
2002-05
影响因子：
1.9
通讯作者：
F. Hong;Yun Zhang;J. Ishikawa;A. Onae;H. Matsumoto
中科院分区：
文献类型：
--
作者：
F. Hong;Yun Zhang;J. Ishikawa;A. Onae;H. Matsumoto
通过观察两束碘稳频激光的外差拍音信号，测量了碘分子R（87）33-0，R（145）37-0和P（132）36-0跃迁在532 nm附近的超精细结构。测量的超精细分裂拟合到一个四项哈密顿量，其中包括电四极，自旋旋转，张量自旋，和标量自旋自旋相互作用，精度为1.720赫兹。由此拟合得到了高精度的超精细常数。首次测定了碘分子的张量自旋-自旋和标量自旋-自旋超精细常数的振动依赖性。所观察到的超精细跃迁在532 nm区域是很好的光学频率参考。
Hyperfine structures of the R(87)33-0,R(145)37-0, and P(132)36-0 transitions of molecular iodine near 532 nm are measured by observing the heterodyne beat-note signal of two I2-stabilized lasers, whose frequencies are bridged by an optical frequency comb generator. 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 ∼720 Hz. High-accurate hyperfine constants are obtained from this fit. Vibration dependences of the tensor spin–spin and scalar spin–spin hyperfine constants are determined for molecular iodine, for the first time to our knowledge. The observed hyperfine transitions are good optical frequency references in the 532-nm region.