Femtosecond Rotational Dynamics ofD2Molecules in Superfluid Helium Nanodroplets,Physical Review Letters

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Femtosecond Rotational Dynamics ofD2Molecules in Superfluid Helium Nanodroplets
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-06-16 , DOI: 10.1103/physrevlett.128.243201
Junjie Qiang ₁ , Lianrong Zhou ₁ , Peifen Lu ₁ , Kang Lin ₁ , Yongzhe Ma ₁ , Shengzhe Pan ₁ , Chenxu Lu ₁ , Wenyu Jiang ₁ , Fenghao Sun ₁ , Wenbin Zhang ₁ , Hui Li ₁ , Xiaochun Gong ₁ , Ilya Sh Averbukh ₂ , Yehiam Prior _{1,

2} , Constant A Schouder ₃ , Henrik Stapelfeldt ₃ , Igor N Cherepanov ₄ , Mikhail Lemeshko ₄ , Wolfgang Jäger ₅ , Jian Wu _{1,

6,

7}

Affiliation

Rotational dynamics of

D_{2}

molecules inside helium nanodroplets is induced by a moderately intense femtosecond pump pulse and measured as a function of time by recording the yield of

{HeD}^{+}

ions, created through strong-field dissociative ionization with a delayed femtosecond probe pulse. The yield oscillates with a period of 185 fs, reflecting field-free rotational wave packet dynamics, and the oscillation persists for more than 500 periods. Within the experimental uncertainty, the rotational constant