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基态能级 [jī tài néng jí]
ground level
- 文摘:研究了四能级系统中五阶极化的拍频效应，考虑了抽运光束为窄带线宽或宽带线宽的情形.发现其对能级分裂的测量精度决定于光学跃迁的均匀增宽.也就是说，这种技术在测量与基态是偶极禁戒跃迁的两激发态之间的能级分裂时，可得到消除多普勒增宽的精度.
Abstract: We have studied theoretically a beat effect in a fourlevel system due to fifthorder optical polarization,and considered the cases that the pump beams have either narrowband or broadband linewidth.We have found that the accuracy for the energylevel splitting measurement is determined by the homogeneous linewidths of the optical transitions.That is to say,this technique can achieve Dopplerfree precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state. - 文摘:研究了四能级系统中基于五阶极化的拍频效应，考虑了抽运光束为窄带线宽或宽带线宽的情形.发现其对能级分裂的测量精度决定于光学跃迁的均匀增宽.也就是说，这种技术在测量与基态是偶极禁戒跃迁的两激发态之间的能级分裂时，可得到消除多普勒增宽的精度.
Abstract: We have studied theoretically a beat effect in a four-level system due to fifth-order optical polarization,and considered the cases that the pump beams have either narrowband or broadband linewidth.We have found that the accuracy for the energy-level splitting measurement is determined by the homogeneous linewidths of the optical transitions.That is to say,this technique can achieve Doppler-free precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state.
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