The solar pumped solid state laser is the system which changes sunlight into a laser. We are developing a solar pumped solid state laser for Space Solar Power Systems (SSPS) that require over 20 % efficiency and a high-power. We designed a solar pumped laser system with over 20 % laser efficiency in 2007. In this paper, first, we describe the previous overseas solar laser development status. Next, we describe the previous domestic solar laser development status. Laser efficiency using the sunlight is equal to or less than 1 % at domestically and abroad. Finally, we describe our solar pumped laser development.
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