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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 57-60 |
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Shafii Mousavi N, Parvin P, Eilchi M. Investigation of Amplification Parameters in Q-switched Fiber Oscillator-Amplifier System. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :57-60
URL: http://opsi.ir/article-1-1943-en.html
URL: http://opsi.ir/article-1-1943-en.html
1- Photonics Engineering Group, Department of Physics, Amirkabir University of Technology
2- Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute (NSTRI)
2- Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute (NSTRI)
Abstract: (2035 Views)
In this paper, an analytical model is presented for master-oscillator power-amplifier (MOPA) of Q-switched double-clad ytterbium 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 pulse is injected to the amplifier and the gain and saturation coefficients are obtained by using the best fitting between the data obtained from the solving of the rate equations and the transient amplification equation, based on the least squares method (LSM). Finally, the dependence of different cavity parameters on small signal gain and saturation power are analyzed.
Keywords: Gain coefficient, Saturation power, Q-switched, Fiber laser, Master-oscillator power-amplifier.
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