报道了相同实验条件下激光二极管端面抽运生长型复合Nd:YVO4晶体声光调Q和RTP电光调Q激光器。应用声光调Q和RTP电光调Q分别实现了最高重复频率200 k Hz和500 k Hz的TEM00模1 064 nm激光输出,输出平均功率分别达到12.13 W和13.56 W,脉冲...报道了相同实验条件下激光二极管端面抽运生长型复合Nd:YVO4晶体声光调Q和RTP电光调Q激光器。应用声光调Q和RTP电光调Q分别实现了最高重复频率200 k Hz和500 k Hz的TEM00模1 064 nm激光输出,输出平均功率分别达到12.13 W和13.56 W,脉冲宽度分别为16.65 ns和27.27 ns,并首次对比了两种调Q体制下的高重频激光输出特性。实验结果表明,RTP电光调Q具有更好的高重频关断能力,但由于受到高压驱动的限制,RTP电光调Q无法在更高重复频率下实现窄脉宽高峰值功率激光输出,而在更高重频下仍有较好输出性能的声光调Q将取代电光调Q成为几百千甚至上兆Hz高重频激光器的首选调Q机制。展开更多
Objective:The properties of Nd:GdVO4 laser crystals were studied in application of all-solid laser with LD pumped.Method:We adopted sand wich structural Nd:YVO4 laser crystals experimental devices separately.Results:...Objective:The properties of Nd:GdVO4 laser crystals were studied in application of all-solid laser with LD pumped.Method:We adopted sand wich structural Nd:YVO4 laser crystals experimental devices separately.Results:As to Nd:YVO4 crystal,1.2W continuous laser output at 1064nm was ac-quired with the optical-to-optical transition efficiency of 30%.And as to Nd:GdVO4,1.8W continuous laser out-put at 1064nm was acquired with the optical-to-optical efficiency of 47.2%.Conclusion:All-solid laser is of simple and compact structure,long lifetime,low cost and high efficiency that it will be extensively applied to laser bioengineering,laser environmental monitoring and so on.And comparing the properties of Nd:GdVO4 to that of Nd:YVO4,Nd:GdVO4 would be a more promising all-solid laser crystal.展开更多
文摘在满足双波长激光振荡阈值相等的条件下,分析和数值计算抽运光、双波长(1.34,1.06μm)振荡激光光束半径的相对大小,以及其对两个子腔输出镜透过率关系的影响.研究发现,当抽运光、两种波长激光的光束半径之比达到一定值时,两个子腔输出镜透过率之间的最佳关系不随腔内光束半径的变化而变化.在考虑Nd∶YVO4晶体的热透镜效应情况下,可合理地选择2个子腔腔长来实现双波长(1.34,1.06μm)激光相同的振荡阈值.实验结果表明,抽运功率较小(小于11 W)时,输出的1.06μm激光功率大于1.34μm激光功率;抽运功率较大时(大于11 W),1.34μm激光功率超过1.06μm激光功率;当抽运功率等于11 W时,1.34μm和1.06μm激光功率均为0.675 W.
文摘Objective:The properties of Nd:GdVO4 laser crystals were studied in application of all-solid laser with LD pumped.Method:We adopted sand wich structural Nd:YVO4 laser crystals experimental devices separately.Results:As to Nd:YVO4 crystal,1.2W continuous laser output at 1064nm was ac-quired with the optical-to-optical transition efficiency of 30%.And as to Nd:GdVO4,1.8W continuous laser out-put at 1064nm was acquired with the optical-to-optical efficiency of 47.2%.Conclusion:All-solid laser is of simple and compact structure,long lifetime,low cost and high efficiency that it will be extensively applied to laser bioengineering,laser environmental monitoring and so on.And comparing the properties of Nd:GdVO4 to that of Nd:YVO4,Nd:GdVO4 would be a more promising all-solid laser crystal.
