Fig. 1. Experimental setup of a solar-pumped Nd:YAG laser examined on the Earth: 1, Paraboloidal mirror; 2, Solar radiation; 3, Water-cooled Nd: YAG laser rod (4 mm in. diam and 75 mm in length); 4, Totally reflecting mirror; 5, Output mirror; 6, Detector; 7, IR-viewer; 8, He-Ne laser for optical alignments. Fig. 2. A solar-pumped solid-state laser system mounted on the station: 1, Solar radiation; 2, Paraboloidal solar concentrator; 3, Cooled laser rod; 4, Totally reflecting mirror; 5, Output mirror; 6, Laser beam; 7, Orientation mechanism. optics by using a flexible optical fiber as shown in Fig. 3. With this improved laser system, the laser head can be located independently from the orientation and position of the parabolic mirror. Therefore, we can use a coherent laser light at any desired place in the space station.
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