- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Simultaneous solar laser emissions from three Nd:YAG rods within a single pump cavity
摘要： We report here, to the best of our knowledge, the first simultaneous emission of three continuous-wave solar laser beams by end-side-pumping three 3.0 mm diameter, 25 mm length Nd:YAG single-crystal rods within a single conical pump cavity. An aspheric fused silica lens was used to couple the concentrated solar radiation from the focal zone of a parabolic mirror with 1.0 m2 effective collection area into the laser rods within the pump cavity. 18.3 W multimode solar laser power was measured, resulting in 5.1% laser slope efficiency. 0.036 W laser beam brightness figure of merit was also achieved for each beam, being 9 times more than that of the most efficient solar laser with 32.5 W/m2 collection efficiency. Since the three laser rods were associated with their own 1064 nm output mirrors, it was possible to adjust individually both solar laser output power levels and beam qualities of the three laser beams by adopting different resonant cavity lengths, enabling potential solar laser applications.
关键词： Laser emission,Multi-rod,Parabolic mirror,Slope efficiency,Solar-pumped laser,Nd:YAG
更新于2025-09-23 15:19:57
-
[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Comparative Study of the Pump Beam Quality Effect on the Slope Efficiency in Kerr-Lens Mode-Locked Ti:Sapphire Laser
摘要： A comparative study of the pump beam quality effect on the slope efficiency in Kerr-lens mode-locked Ti:sapphire laser is presented. The Ti:sapphire laser is a very attractive candidate for ultrafast laser applications because of its broad emission bandwidth and high gain. The main factor that limits the efficiency of Ti:sapphire lasers is the poor absorption of the pump beam in the Ti:sapphire crystal. The pump beam quality is a key parameter for the efficiency of the laser. In this work, we compared a 1.0 μm green and a 1.0 μm from a green laser in order to investigate the effects of spatial beam properties on the pumping efficiency in a Ti:sapphire laser. The beam quality factors of green and green lasers were measured to be 1.2 and 1.1, respectively. After the special beam combination, the combined beam was focused into a 2-mm-long Ti:sapphire crystal. The focused beam diameters of the green and green lasers were 24 μm and 22 μm in the slow axis and 22 μm and 23 μm in the fast axis, respectively. The slope efficiency of 21.1% more for the green laser than the green laser was achieved. After the beam combination, the slope efficiency of 24.8% was achieved. The positive effect of higher beam quality on the slope efficiency was demonstrated.
关键词： pump beam quality,Kerr-lens mode-locking,Ti:sapphire laser,slope efficiency
更新于2025-09-12 10:27:22