Role of incoherent pumping and Er3+ ion concentration on subluminal and superluminal light propagation in Er3+-doped YAG crystal

doi:10.1088/1674-1056/24/1/014204

Abstract

We study the absorption-dispersion process and group index of weak probe field in a four-level Er³⁺:YAG crystal. We find that the Er³⁺ ion concentration and incoherent pumping field can influence the absorption-dispersion process and group index of weak probe field. Moreover, our results show that Er³⁺ ion concentration plays a major role in lasing without inversion and absorption with inversion.

Keywords: Er³⁺ ion concentration incoherent pumping field superluminal

Received: 21 May 2014
Revised: 19 June 2014
Accepted manuscript online:

PACS:	42.50.-p	(Quantum optics)
	42.65.-k	(Nonlinear optics)

Corresponding Authors: Seyyed Hossein Asadpour
E-mail: s.hosein.asadpour@gmail.com

Cite this article:

Seyyed Hossein Asadpour, H. Rahimpour Soleimani Role of incoherent pumping and Er³⁺ ion concentration on subluminal and superluminal light propagation in Er³⁺-doped YAG crystal 2015 Chin. Phys. B 24 014204

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Role of incoherent pumping and Er3+ ion concentration on subluminal and superluminal light propagation in Er3+-doped YAG crystal

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Role of incoherent pumping and Er³⁺ ion concentration on subluminal and superluminal light propagation in Er³⁺-doped YAG crystal