Abstract

Sun-pumped lasers are useful for space and terrestrial applications. In terms of collection efficiency and beam quality, solar lasers still have a way to go to seriously compete with solar PV-cell diode-pumped solid-state lasers. The main challenges are the needs of both doubling the reported collection efficiency of 6.7 W/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> and improving the beam quality of today's solar lasers. To enhance the solar laser performance, a truncated fused silica elliptical pump cavity is proposed.

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