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Fatemi M M, Shayganmanesh M. study of operation MOPA method in Thin disk laser and its effect on laser beam quality. ICOP & ICPET _ INPC _ ICOFS 2018; 24 :333-336
URL: http://opsi.ir/article-1-1421-en.html
URL: http://opsi.ir/article-1-1421-en.html
1- Iran University of Science and Technology
Abstract: (2887 Views)
The goal of this paper is studying the amplification rate and the quality of the output beam in a MOPA system. We focus on a stable amplifier. We study and analyze these two quantities for one to ten times of input beam pass into the amplification system. all computations are done using the optical wave method using Collins integral. We quantify the quality of the beam using M2 factor. After analyzing the changes induced by pump laser on a thin disk, we consider the effects in geometrical design of the amplifier. We use SolidWoks Simulation to simulate the changes of the thin disk due to heat absorption from pump and mounting system. Results then are inserted into MATLAB and changes in the shape of the intensity distribution are computed in a 3D regime. Finally, we would conclude a design for a multi-pass amplifier with predictable output power and quality of the amplified laser beam
Keywords: Master oscillator power amplifier, factor, Thin disk laser, Optical pass difference, Thermal tensile, Temperature gradient
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