Nonlinear absorption and refraction effect on thermal lensing of solid-state laserrods |
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| Authors: | Kazem Jamshidi-Ghaleh Hossain Jafarzadeh Robab Tanavar |
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| Institution: | 1. Department of Physics, Azarbaijan University of Tarbiat Moallem, Tabriz, Iran;2. Sama College, Tabriz Branch, Iran;1. Department of Physics, Renmin University of China, Beijing 100872, China;2. Key Lab of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;1. Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität München, Germany;2. Max-Planck-Institut für Quantenoptik, Garching, Germany |
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| Abstract: | In this work, the effect of nonlinear absorption and refraction on thermal lensing of an end-pumped solid-state laser rod is investigated. At high input pump powers and on the focused region of thermal lensing, nonlinear responses of the active medium will be important. By considering the nonlinear absorption and refraction, the intensity distribution inside the rod is obtained. A convergence lens models the intensity dependency of the refractive index. By modeling of the laser rod with some contributed effective lenses, the stability condition of a typical laser resonator is investigated. |
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