Abstract
Average output power of high-repetitive solid-state lasers is limited by heat conduction, because a high-input pumping power causes strong thermal distortion in lasants. To eliminate this thermal problem, a bundle of LHG-8 glass fibers was used as the lasant. The laser fiber had a Nd2O3 concentration of 8 wt. %, 100-μm core diameter, and 110-μm clad diameter. About 1300 fibers were bundled as shown in Fig. 1 and side-pumped by two flashlamps.
© 1988 Optical Society of America
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