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蓝光二极管抽运掺镨氟化钇锂晶体腔内倍频348.9 nm紫外激光器

348.9 nm Intra-Cavity Frequency-Doubling Ultraviolet Laser in Blue Laser Diode Pumped Pr∶YLF Crystal

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摘要

设计了蓝光二极管抽运掺镨氟化钇锂(Pr∶YLF)腔内倍频 348.9 nm紫外激光器。激光器采用Z型折叠腔结构,利用45°合光片将抽运功率为1.4 W的444 nm蓝光和抽运功率为1.5 W的469 nm蓝光进行激光二极管合光,并将其作为抽运源,抽运长度为5 mm、掺杂浓度(质量分数)为0.5%的Pr∶YLF晶体。将I类相位匹配的三硼酸锂作为倍频晶体,通过优化谐振腔镜膜系和腔型设计,在抽运功率最大时,获得了最大输出功率为132.2 mW、中心波长为348.9 nm的连续紫外光输出,抽运光到紫外光的光-光转换效率约为4.5%。

Abstract

A 348.9 nm intra-cavity frequency-doubling ultraviolet laser in blue laser diode pumped Pr∶YLF crystal is designed, in which a Z-folded cavity structure is adopted. A 444 nm blue laser diode with pump power of 1.4 W and a 469 nm blue laser diode with pump power of 1.5 W obtained are combined by a 45° combiner film as a pump laser for the Pr∶YLF crystal which has a length of 5 mm and a doping concentration (mass fraction) of 0.5%. In addition, the type I phase-matched LBO crystal is chosen for frequency-doubling. By optimizing the resonator mirror coating and structural design, we achieve a continuous ultraviolet laser output with a maximum power of 132.2 mW, a central wavelength of 348.9 nm, and an optical-to-optical conversion efficiency of 4.5% when pump power is the maximum.

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中图分类号:TN248.1

DOI:10.3788/cjl201845.1201003

所属栏目:激光器件与激光物理

基金项目:长春市科技计划(16SS18)

收稿日期:2018-07-12

修改稿日期:2018-08-01

网络出版日期:2018-08-07

作者单位    点击查看

牛娜:长春新产业光电技术有限公司, 吉林 长春 130012
曲大鹏:长春新产业光电技术有限公司, 吉林 长春 130012
窦微:长春新产业光电技术有限公司, 吉林 长春 130012
任广胜:长春新产业光电技术有限公司, 吉林 长春 130012
周阳:长春新产业光电技术有限公司, 吉林 长春 130012
夏磊:长春新产业光电技术有限公司, 吉林 长春 130012
吕敏航:长春新产业光电技术有限公司, 吉林 长春 130012
郑权:长春新产业光电技术有限公司, 吉林 长春 130012中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033

联系人作者:牛娜(niuna@cnilaser.com)

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引用该论文

Niu Na,Qu Dapeng,Dou Wei,Ren Guangsheng,Zhou Yang,Xia Lei,Lü Minhang,Zheng Quan. 348.9 nm Intra-Cavity Frequency-Doubling Ultraviolet Laser in Blue Laser Diode Pumped Pr∶YLF Crystal[J]. Chinese Journal of Lasers, 2018, 45(12): 1201003

牛娜,曲大鹏,窦微,任广胜,周阳,夏磊,吕敏航,郑权. 蓝光二极管抽运掺镨氟化钇锂晶体腔内倍频348.9 nm紫外激光器[J]. 中国激光, 2018, 45(12): 1201003

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