Modeling of laser-diode side-pumped continuous wave Nd:YAG/KTP green laser |
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Authors: | Wenyong Cheng Shengzhi Zhao Zhuang Zhuo Xiaomin Zhang Yun Wang |
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Institution: | 1. School of Information Science and Engineering, Shandong University, Jinan 250100, PR China;2. Laser Fusion Research Center, CAEP, Mianyang 621900, PR China;3. Shanda Luneng Information Technology Co. Ltd., Shandong University, Jinan 250100, PR China;4. Department of Criminal Science and Technology, Shandong Police College, Jinan 250014, PR China |
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Abstract: | By reasonably assuming the distribution of the pump light in laser medium, the equations about the absorption and the gain for the end-pumped lasers are applied to the side-pumped ones, and a theoretical model for laser-diode side-pumped continuous wave intracavity-frequency-doubling lasers is given, in which the thermally induced diffraction loss and the variation of the fundamental wave radii with the pump power are considered. By using a Z-type cavity, a laser-diode side-pumped continuous wave Nd:YAG/KTP green laser is realized. The threshold pump power is 15 W, and the highest output power of the green laser is 3.75 W at the pump power of 160 W, corresponding to an optical–optical slope efficiency 2.6%. The experimental results are consistent with the numerical solutions. |
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