Laser action in Nd(3+)-doped lanthanum oxysulfide powders.

Iñaki Iparraguirre, Jon Azkargorta, Odile Merdrignac-Conanec, Mohamad Al-Saleh, Christophe Chlique, Xianghua Zhang, Rolindes Balda, Joaquín Fernández

Index: Opt. Express 20(21) , 23690-9, (2012)

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Abstract

We have investigated the stimulated emission properties of Nd(3+) doped La(2)O(2)S powders at room temperature as a function of pumping energy density, excitation wavelength, and Nd(3+) ion concentration. The absolute stimulated emission energy has been measured. Expressions for the slope efficiencies and lasing thresholds as a function of rare earth concentration and pumping wavelengths, which qualitatively agree with experimental observations, are discussed.