Investigation of the beam propagation in a pumped laser rod |
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| Authors: | Xiaodong Yang Aicong Geng Dinwen Liu Jinbao Liu |
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| Institution: | a Department of Physics, Jiaying college, Meizhou, Guangdong 514015, China
b Department of Mathematics and Physics, Beijing Technology and Business University, Beijing 100048, China |
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| Abstract: | A method investigating the beam propagation in a pumped laser rod is proposed. In this method, the pumped laser rod in a resonator is evenly divided into N segments along the laser rod axis, and each segment is considered as a small thermal lens with thermal focus length of f. Accordingly, the beam radius distributions in the laser rod for the symmetric and asymmetric resonators are thus calculated, respectively. The beam radius distribution in the whole resonator is also calculated. Moreover, the calculated beam distribution in the whole resonator and in the rod is also described in detail. |
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| Keywords: | Thermal lens Beam radius distribution Round-trip propagation matrix |
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