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Journal of Modern Optics Volume 59, 2012 - Issue 5
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Research Articles

Lasing without population inversion in an Er3+-doped YAG crystal

M. Sahrai Research Institute for Applied Physics, University of Tabriz, Tabriz, IranCorrespondence[email protected]
,
S.H. Asadpour Islamic Azad University, Bandar-e Anzali Branch, Young Researchers Club, Bandar-e Anzali, Iran
,
A. Eslami-Majd Research Institute for Applied Physics, University of Tabriz, Tabriz, Iran
&
R. Sadighi-Bonabi Department of Physics, Sharif University of Technology, Tehran, Iran
Pages 446-454 | Received 02 Aug 2011, Accepted 14 Oct 2011, Published online: 10 Nov 2011
 
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Abstract

Two atomic models are proposed for an Er3+-doped YAG crystal with application to lasing with and without population inversion. It is shown how an incoherent pumping field and coherent control coupling field can produce a laser in the presence and absence of population inversion.

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