Regular Article

Influence of frequency detuning on carrier-wave Rabi flop-related phenomena in the extreme nonlinear optics regime

¹ School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, P.R. China
² State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, P.R. China

^a e-mail: chpliu@siom.ac.cn

Received: 26 June 2018
Received in final form: 17 September 2018
Published online: 14 November 2018

Abstract

In a simplified two-level atom or atomic-like system, resonantly interacting with laser, the so-called carrier-wave Rabi flop occurs accompanied by the occurrence of higher spectral components when the Rabi frequency is comparable with the exciting laser frequency [S. Hughes, Phys. Rev. Lett.81, 3363 (1998)]. Beyond resonance, the introduction of a small detuning does not play a negative role as expected, however, the spectral intensity versus detuning exhibits a Gaussian-like distribution pattern, i.e., there exists an optimal detuning value for the maximal spectral intensity. In addition, the propagation effect also shows an obvious influence, manifested as an obvious shift of this optimal detuning value.