钕玻璃片状放大器玻璃腔的概念设计  

Conceptual Design for Glass Cavity in Nd∶Glass Slab Amplifier

作　　者：江梦春 朱健强[1] 刘志刚[1] 王利[1] JIANG Meng-chun ZHU Jian-qiangl LIU Zhi-gangl WANG Li(Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理重点实验室,上海201800 [2]中国科学院大学,北京100049

出　　处：《光子学报》2016年第11期124-129,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61405211);惯性约束聚变能源先期关键技术合作研究(No.2012DFG62040)资助~~

摘　　要：针对片状放大器片腔的洁净度问题,提出一种钕玻璃片状放大器玻璃腔的设计方案.选用滤紫外石英玻璃作为主框架的材料,对玻璃腔的结构和密封方案进行设计,并利用玻璃腔外表面镀金属材料的方式进行遮光.采用神光Ⅱ升级主放和100片状放大器进行不同腔体的洁净度对比试验,结果表明玻璃腔的洁净度较不锈钢腔提高了近70%.运用光学高级系统分析程序对玻璃腔进行光线追迹,其钕玻璃泵浦比例提高了8.84%.该方案不仅能减少腔内气溶胶的产生,还能提高钕玻璃泵浦比例.To overcome the problem of cleanliness in the laser＇s internal cavity, a glass cavity design for a Nd： glass slab amplifier was proposed, which uses UV-stop quartz glass for its main structure. The design of the main structure of the glass cavity and the sealing are optimized, and metal-coated surfaces are used to prevent light from escaping. The cleanliness of the stainless steel cavity of the slab amplifier of the SG- II-UP laser and the glass cavity of a ql00 slab amplifier were compared; the cleanliness of the glass cavity was found to be 70 % better than that of the stainless cavity. Further, advanced system analysis program was used to simulate the designed amplifier, with the pumping ratio of the Nd：glass in the glass cavity being increased by 8.84 %. Thus, the glass cavity decreases the production of aerosOts and enhances the pumping ratio of the Nd ： glass.

关 键 词：激光器 高功率固体激光驱动器 片状放大器 结构设计 气溶胶 

分 类 号：TN242[电子电信—物理电子学]