LD端面泵浦固体激光器理论在测量Nd:YVO_4晶体有效受激发射截面中的应用  

Measuring Effective Stimulated Emission Cross-sections of Nd:YVO_4 Crystals by the Theory of LD End-pumped Solid-state Lasers

作　　者：王正平[1] 孙洵[1] 许心光[1] 孙连科[1] 张少军[1] 孟宪林[1] 程瑞平[1] 邵宗书[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100

出　　处：《量子电子学报》2001年第2期103-106,共4页Chinese Journal of Quantum Electronics

摘　　要：对四种掺杂浓度的Ｎｄ：ＹＶＯ４晶体进行了激光性质的研究和对比．从ＬＤ端面泵浦固体激光器的理论出发，结合实验数据计算了相应晶体的有效受激发射截面σｅ．结果表明，随Ｎｄ３＋ 浓度的提高．Ｎｄ：ＹＶＯ４晶体的有效受激发射截面σｅ逐渐增大，上能级寿命τｅ不断减小，两者的乘积在２ａｔ．％附近达到最大值．The theory of LD end-pumped solid-state lasers is analyzed, and a method that measures the effective stimulated emission cross-sectionσe of laser crystal is ascertained. We compare the threshold and slope efficiency of four Nd:YVO4 crystals which have different doping levels, and calculate the e of these crystals with upper-level life-times that have measured by us. Our results show that the 1.9at% Nd:YVO4 crystal has aσeτe of 18.3μscm which is largest in all the four samples.

关 键 词：LD端面泵浦 固体激光器 ND:YVO4晶体 掺杂浓度 有效受激发射截面 

分 类 号：TN248.1[电子电信—物理电子学] O432.12[机械工程—光学工程]