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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 1097-1100 |
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Jamshidi Seresht M, Shahraki H R, Aghaie M, Kazemi S. Design of refractive laser beam shaper to produce flat-top profile irradiance in order to use in pumping system of thin disk lasers. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :1097-1100
URL: http://opsi.ir/article-1-2198-en.html
URL: http://opsi.ir/article-1-2198-en.html
1- Iranian National Center for Laser Science and Technology
Abstract: (1213 Views)
One of the most prominent parameters in thin disk lasers’ performance is their pump profile making temperature gradient in disk. This phenomenon is able to distort laser’s wavefront, especially in high power operation, by two physical properties of disk including temperature-dependent refractive index and thermal expansion. It is clear that as the pump profile uniformity (super-Gaussian coefficient) increases, the amount of temperature gradient and wavefront distortion will proportionally reduce. In this paper, a refractive laser beam shaper has been simulated and designed in order to generate a circular flat-top profile on disk surface with 12.48 mm diameter and super-Gaussian coefficient of 16.4. The system has been, also, experimented practically that its results were similar to numerical ones, the spot diameter and super-Gaussian coefficient were 12.42 mm and 18.6, respectively.
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