镁Mg2s^21S0—3s3d^1D2单光子电四极矩跃迁的研究

李邵辉, 易有根

用染料激光来激发Ｓｒ原子，在５ｓ＾２１Ｓ０－５ｓ６ｄ＾１Ｄ２双光子共振跃迁时，观察到两束前向辐射，经分析认为是一四波混频过程。并分析了这一四波混频过程并对其辐射光强与泵浦光强和Ｓｒ的饱和蒸汽压的关系进行了分析。

李邵辉, 易有根

用染料激光来激发Ｓｒ原子，首次在实验上发现较强的ＳｒＩ５ｓ＾２＾１Ｓ０－５ｓ４ｄ＾１Ｄ２，５ｓ＾２１Ｓ０－５ｓ６ｄ＾１Ｄ２单光子电四极矩Ｅ２共振跃迁离子信号，并对５ｓ＾２１Ｓ０－５ｓ６ｄ＾１Ｄ２共振离子时，伴随出现的前向相干辐射进行了判断与分析。

P.V. Pokasov, А. В. Тайченачев, E. V. Baklanov

In this paper, the possibility of measuring the forbidden 21S0 – 23S1 transition frequency (1557 nm) of a helium atom by the method of stimulated Raman scattering through the intermediate 23P1 level is demonstrated. The transition is important for the spectroscopy of the helium atom because it relates the singlet and triplet parts of the spectrum.

常鑫鑫, 沈礼, 杨玉娜 +1 more

于舸, 于肇贤

E. V. Baklanov, A V Denisov

The probability W of the forbidden magnetic-dipole 2 1 S 0 — 2 3 S 1 transition in the helium atom is calculated to be 6.11 × 10 -8 s -1 . An estimate is obtained of the number of atoms excited to the 2 1 S 0 state by a travelling wave which is in resonance with the frequency of this transition.