Nonlinear laser-induced frequency shift in a $^23$Na spin-1 condensate

Ningxuan Zheng, Wenliang Liu, Vladimir Sovkov, Jing Xu, Guiyuan Ge, Yuqing Li, Peng Li, Yongming Fu, Jizhou Wu, Jie Ma, Liantuan Xiao, Suotang Jia

Research output: Contribution to journalArticlepeer-review


Herein, we report on the experimental observations and a quantitative determination of the laser-induced frequency shift (LIFS) in the photoassociation (PA) spectra of spinor Bose-Einstein condensate of sodium. Our investigations revealed a nonlinear dependence of the LIFS on the intensity of PA laser. By developing a model within the quadratic Stark effect, we simulate the experimental results via a theoretical model that confirms the former. The experimental observations and the theoretical analysis can further improve the accuracy of investigations on important molecular properties and on preparation of specific molecular states, with possible applications in various key fields.
Original languageEnglish
Article number32892
Number of pages8
JournalOptics Express
Issue number21
StatePublished - 1 Oct 2021

Scopus subject areas

  • Physics and Astronomy(all)


  • Electric fields
  • Laser beams
  • Magnetic fields
  • Quantum information processing
  • Stark effect
  • Tunable diode lasers
  • photoassociation
  • LIFS
  • laser-indiced frequency shif

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