Frequency Modulated Oscillators with Soluble Dynamics: A Model for Resonance Spectroscopy

Toschihico Arimitsu, Masashi Ban, Fumiaki Shibata

Yu. V. Vladimirova, B. A. Grishanin, Victor N. Zadkov +4 more

Dynamics of a three-level quantum system in Λ-configuration driven by a resonant laser field with and without frequency modulation (FM) is studied for the first time in detail using two simulation techniques – the density matrix and quantum trajectories analysis. This analysis was applied to the FM-spectroscopy of coherent dark resonances in Cs atoms and computer simulation results for the absorption spectra are in qualitative agreement with those taken in an experiment.

Masashi Ban, Toshihico Arimitsu

Julia Vladimirova, B. A. Grishanin, Victor N. Zadkov +5 more

Theoretical model for the frequency-modulation spectroscopy of dark resonances is discussed in detail on example of a three-level quantum system in A-configuration driven by resonant laser field(s) with and without frequency modulation using two simulation techniques-the density matrix and quantum trajectories analysis.

S.P. Tewari, M Kirshna Kumari

The authors have analysed the optical double resonance signal to second order in the modulation of the amplitudes of the two lasers at high intensities. Resonant modulation in the populations of the upper level of the transitions are induced at the effective Rabi frequency alpha 0 , whenever the modulation frequencies themselves or a combination of them becomes equal to O, +or- alpha 0 , +or-2 alpha 0 . It is proposed that by performing experiments similar to those done by Miyazaki et al such Rabi resonances in the populations of the levels may be detected by optogalvanic technique-i.e., by monitoring the oscillations in the current or the voltage at the sum or the difference of the modulation frequencies of the two lasers.

Marco Merkli