| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6533904 | Solar Energy Materials and Solar Cells | 2018 | 5 Pages |
Abstract
We report here a significant progress in solar laser slope efficiency by end-side-pumping a 4.5â¯mm diameter, 35â¯mm length Cr:Nd:YAG ceramic rod with a 1.0â¯m2 effective collection area heliostat-parabolic mirror solar energy concentration system. A novel fused silica liquid light guide lens with unique water cooling approach was used to efficiently couple the concentrated solar radiations from the focal zone of a parabolic mirror into the laser rod within a conical pumping cavity. 32.5â¯W continuous-wave 1064â¯nm solar laser power was measured, corresponding to 6.7% slope efficiency, being 1.28 times more than the previous record. The highest solar laser collection efficiency of 32.5â¯W/m2 was also achieved.
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Authors
Dawei Liang, Cláudia R. Vistas, Bruno D. Tibúrcio, Joana Almeida,