首页|Excitation and ionization of OCS molecules in strong UV and NIR laser fields

Excitation and ionization of OCS molecules in strong UV and NIR laser fields

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Rydberg state excitation(RSE)is a highly non-linear physical phenomenon that is induced by the ionization of atoms or molecules in strong femtosecond laser fields.Here we observe that both parent and fragments(S,C,OC)of the tri-atomic molecule carbonyl sulfide(OCS)can survive strong 800 nm or 400 nm laser fields in high Rydberg states.The dependence of parent and fragment RSE yields on laser intensity and ellipticity is investigated in both laser fields,and the results are compared with those for strong-field ionization.Distinctly different tendencies for laser intensity and ellipticity are observed for fragment RSE compared with the corresponding ions.The mechanisms of RSE and strong-field ionization of OCS molecules in different laser fields are discussed based on the experimental results.Our study sheds some light on the strong-field excitation and ionization of molecules irradiated by femtosecond NIR and UV laser fields.

Rydberg state excitationstrong fieldcarbonyl sulfideionization

师慧军、刘洋、孙添、吕航、徐海峰

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Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China

National Key Program for S&T Research and DevelopmentNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2019YFA030770012174148118741791207414412074146

2024

10.1088/1674-1056/ad3035

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(7)
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