Propagation of a partially coherent beam from an unstable resonator through turbulent atmosphere |
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| Authors: | M. Shayganmanesh M.H. Mahdieh |
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| Affiliation: | 1. Department of Physics , Iran University of Science and Technology , Narmak , Tehran , Iran shaygan@iust.ac.ir;3. Department of Physics , Iran University of Science and Technology , Narmak , Tehran , Iran |
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| Abstract: | The influence of atmospheric turbulence on the propagation of a partially coherent beam from an unstable resonator was studied numerically. The resonant mode of the unstable resonator is obtained by iterative calculation using the Huygens–Fresnel formula. Also, using the extended Huygens–Fresnel integral, the intensity distribution of a propagating laser beam is calculated for different conditions. The influence of turbulence on the profile of partially coherent beams of an unstable resonator is studied. The effects of geometrical parameters of the resonator on the far-field beam profile are investigated. The results show that an unstable resonator with higher magnification has a superior far-field beam profile under partial coherency and turbulence conditions. |
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| Keywords: | laser beam propagation partial coherency unstable resonator |
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