Solar-pumped TEM00 mode Nd:YAG laser by a heliostat - Parabolic mirror system

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Abstract

Here we report a significant advance in solar-pumped laser beam brightness by pumping a 3 mm diameter Nd:YAG single-crystal rod with a heliostat-parabolic mirror system. The incoming solar radiation is first collected and focused by the system. A rectangular fused silica light guide and a 2D-CPC concentrator are then combined to further compress the concentrated solar radiation into the laser rod within a V-shaped pumping cavity. 4.4 W continuous-wave TEM00 mode (M2≤1.05) 1064 nm solar laser power is finally produced, attaining 4.0 W laser beam brightness figure of merit, which is 2.1 times higher than the previous record by a Fresnel lens. 0.81% TEM00 mode laser slope efficiency is achieved.

Original languageEnglish
Pages (from-to)305-308
Number of pages4
JournalSolar Energy Materials and Solar Cells
Volume134
DOIs
Publication statusPublished - Mar 2015

Keywords

  • Neodymium
  • Parabolic mirror
  • Resonator
  • Single-mode laser
  • Solar heliostat
  • Solar-pumped laser

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