The Theory of Three-level Photon Echo Using of Rotating Wave Approximation

TL;DR

This paper presents a theoretical and numerical study of three-level photon echo in a Lambda system, highlighting the effects of field frequencies and Doppler shifts on echo signals.

Contribution

It introduces a new theoretical framework considering Doppler effects, revealing how field frequencies influence the ground state in photon echo phenomena.

Findings

Doppler effect significantly alters echo polarization and intensity.

Field frequency impacts ground state energy levels.

Theoretical equations incorporate Doppler shifts for more accurate modeling.

Abstract

The three level photon echo has been described in different works by using rotating wave approximation but none of them did not get results which show the effects of field's frequencies on frequency of ground level of system. In this work, we studied a Lambda type system theoretically and numerically. By considering the Doppler effect in environment, we get different equation for polarization of echo signal and its intensity.