Title of article
Investigation of Amplification Parameters in Q-switched Fiber Oscillator-Amplifier Systems
Author/Authors
Shafii Mousavi ، Narges Photonics Engineering Group, Department of Physics - Amirkabir University of Technology , Parvin ، Parviz Photonics Engineering Group, Department of Physics - Amirkabir University of Technology , Ilchi-Ghazaani ، Maryam Photonics and Quantum Technologies Research School - Nuclear Science and Technology Research Institute (NSTRI)
From page
155
To page
162
Abstract
In this paper, an analytical model is presented to compare the monolithic endpumped and distributed side-pumped arrangements in the master oscillator power amplifier (MOPA) of Q-switched (QSW) double-clad (DC) ytterbium (Yb)-doped fiber system. First, the time-dependent rate equations are solved numerically by the finite difference method and the output pulse characteristics are obtained. For more amplifying, the laser pulse is injected into the amplifier and the gain and saturation coefficients are obtained by using the best fitting between the outcoming data from solving rate equations and the transient amplification relation, based on the least squares method (LSM). Finally, the dependence of pump power and dopant concentration on the cavity amplifying parameters are investigated.
Keywords
Gain coefficient , Saturation power , End , pumped , Side , pumped , distributed , Q , switched , Fiber laser , Master , oscillator power , amplifier.
Journal title
International Journal of Optics and Photonics (IJOP)
Journal title
International Journal of Optics and Photonics (IJOP)
Record number
2626161
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