High-efficiency solar-pumped TEM00-mode Nd:YAG laser

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Here we report a significant progress in solar-pumped laser slope efficiency and collection efficiency by pumping a 4.0 mm diameter grooved Nd:YAG single-crystal rod with a heliostat-parabolic mirror solar energy concentration system. The incoming solar radiation is firstly collected and focused by the system. An ellipsoid-shaped fused silica concentrator is then used to further compress the concentrated solar radiation into the grooved rod within a 2V-shaped pumping cavity. 4.5 W continuous-wave TEM00-mode (M2≥r1.1)1064 nm solar laser power is finally measured, attaining 2.36% laser slope efficiency, which is 3.37 and 2.91 times higher than previous records by Fresnel lens and parabolic mirror respectively. Record-high TEM00-mode solar laser collection efficiency of 4.0W/m2 is also achieved.

Original languageEnglish
Pages (from-to)397-402
Number of pages6
JournalSolar Energy Materials and Solar Cells
Publication statusPublished - 1 Feb 2016


  • Collection efficiency
  • Parabolic mirror
  • Resonator
  • Single-mode laser
  • Slope efficiency
  • Solar-pumped laser


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