Collection Of theses on high power laser and plasma physics, 2015, 13 (1): 1002007, Published Online: May. 26, 2017  

Design of Non-Imaging Pump Cavity of Laser Rod Amplifier

Author Affiliations
1 中科院上海光学精密机械研究所高功率激光物理联合实验室, 上海 201800
2 中国科学院大学, 北京 100049
Abstract
According to the non-imaging pump style, pump cavity structure with the theoretical maximum coupling efficiency is researched. Multi-lamp non-imaging pump cavities are designed by edge-ray principle and constant string length method. Two calculation models are obtained through the difference of amplifier structures. The Nd∶glass surfaces illumination in the non-imaging and elliptical imaging pump cavity are simulated with the same pump energy. Results show that there are lamp self-absorption and mutualabsorption in the elliptical imaging pump cavity, which affects amplifier′s gain property. To non-imaging pump cavity, the reflector profile avoids light reflecting back to the lamp and reduces the number of reflections. Thus, non-imaging pump cavity can lead to the maximum coupling efficiency and the best pump uniformity.

Wu Yongzhong, Zhu Jianqiang, Li Yangshuai. Design of Non-Imaging Pump Cavity of Laser Rod Amplifier[J]. Collection Of theses on high power laser and plasma physics, 2015, 13(1): 1002007.

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