Dual-rod pumping concept for TEM00-mode solar lasers

被引:12
|
作者
Tiburcio, B. D. [1 ]
Liang, D. [1 ]
Almeida, J. [1 ]
Garcia, D. [1 ]
Vistas, C. R. [1 ]
机构
[1] Univ Nova Lisboa, FCT, Dept Fis, CEFITEC, Campus Caparica, P-2829516 Caparica, Portugal
关键词
ND-YAG LASER; PUMPED LASER; NDYAG LASER; TM;
D O I
10.1364/AO.58.003438
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose here a novel concept to a large improvement in TEM00-mode side-pumped solar laser collection, conversion efficiencies, and brightness figure of merit by pumping two thin laser rods simultaneously, each rod being pumped by half of the solar collector area instead of today's one thick rod scheme pumped by the full solar collector area. A semicylindrical fused silica lens allows an efficient focusing of the concentrated solar power from the focal zone of the parabolic mirror into the two thin laser rods mounted within two compound parabolic concentrator-semicylindrical pump cavities within the same laser head. 17.2 W continuous-wave TEM00-mode solar laser power was numerically calculated, corresponding to 11.0 W/m(2) solar laser collection efficiency, 1.31% incoming solar power-to-TEM00-mode laser power conversion efficiency, and 14.3 W brightness figure of merit, being 1.39, 1.23, and 2.21 times, respectively, higher than the previous state-of-the-art experimental records. (C) 2019 Optical Society of America
引用
收藏
页码:3438 / 3446
页数:9
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