Multiphoton population dynamics in a three-level lambda system and the related light-scattering spectrum

TL;DR

This paper extends an analytic model to analyze multiphoton population transfer and light scattering in a three-level lambda system, considering strong depopulation effects and evaluating the validity of common approximations.

Contribution

It introduces a generalized analytic approach that accounts for strong initial state depopulation in multiphoton processes within lambda systems.

Findings

The model accurately describes multiphoton dynamics under strong depopulation.

Assessment of adiabatic and rotating-wave approximation validity.

Insights into light-scattering spectra in three-level systems.

Abstract

We generalize our analytic approach (Berent, M. and Parzy\'nski, R. (2009): Phys. Rev. A (80) 033834) to include the effect of strong depopulation of the initial state when considering the multiphoton population transfer and scattering of low-frequency light by a 3-level system in the lambda-type configuration. We discuss the quality of the approximations made, i.e., the adiabatic and generalized rotating-wave approximations.