V-type electromagnetically induced transparency and saturation effect at the gas-solid interface

TL;DR

This paper theoretically investigates V-type electromagnetically induced transparency (EIT) and saturation effects at the gas-solid interface, revealing a unique saturation phenomenon that does not affect the EIT dip.

Contribution

It introduces the first analysis of saturation effects specific to V-type systems at the gas-solid interface, distinguishing them from other configurations.

Findings

Identification of a saturation effect unique to V-type EIT systems

The saturation effect causes only an intensity decrease, not affecting the EIT dip

Dependence of reflection spectra on various physical parameters is detailed

Abstract

We theoretically study electromagnetically induced transparency (EIT) in reflection spectra of V-type system at the gas-solid interface. In addition to a narrow dip arising from the EIT effect, we find the other particular saturation effect induced by pump field, which does not exist in $\Lambda$ or $\Xi$ -type system reflection spectra. The saturation effect only induces an intensity decrement in the reflection spectra, and there is no influence on the narrow dip arising from the EIT effect. We detailedly calculate and analyze the dependence of V-type system reflection spectra on probe field intensity, pump field intensity, coherent decay rate, and the initial population after the collision between atoms and the interface.