For citation:
Derbov V. L., Plastun I. L., Orudjev A. A. Non-Stationary Coherent Population Trapping in Frequency-Modulated Fields. Izvestiya of Saratov University. Physics , 2011, vol. 11, iss. 1, pp. 10-14. DOI: 10.18500/1817-3020-2011-11-1-10-14
Non-Stationary Coherent Population Trapping in Frequency-Modulated Fields
Coherent population trapping (CPT) resonance formation is modeled numerically in a three-level Λ-system with one of the near-resonance fields being frequency-modulated. The model is based on density matrix equations in RW approximation with atomic relaxation properly taken into account. Slow modulation is shown to be equivalent to CW excitation with the frequency changed point by point. As the modulation period approaches the relaxation times, the delayed response of the system is shown to cause the CPT resonance shift and reshaping, as well as the appearance of transient oscillations of the energy level populations.
- Агапьев Б. Д., Горный М. Б., Матисов Б. Г., Рождественский Ю. В. Когерентное пленение населенностей в квантовых системах // УФН. 1993. Т. 163, № 9. С. 1−36.
- Arimondo E. Coherent population trapping in laser spectroscopy // Progress in Optics. 1996. Vol. 35. P. 257−354.
- Vanier J. Atomic clocks based on coherent population trapping: a review // Appl. Physics B. 2005. Vol. 81, № 4. P. 421−442.
- Huss A., Lammegger R., Windholz L. et al. Polarisationdependent sensitivity of level-crossing, coherent-populationtrapping resonances to stray magnetic fields // J. of Optical Society of America B. 2006. Vol. 23, № 9. P. 1729−1736.
- ластун И. Л., Дербов В. Л. Исследование влияния нестационарных когерентных эффектов и резонансного самовоздействия на характеристики лазерного пучка, модулированного по частоте // Компьютерная оптика. 2009. Т. 33, № 3. С. 233−239.
- 1618 reads