Abstract
Ytterbium-doped fiber lasers (YDFLs) operating at 1018nm have attracted much interest in recent years due to its application as a high brightness, low quantum defect pump source for multi-kilowatt fiber lasers. In addition to the main challenge of suppressing amplified spontaneous emission (ASE) occurring around 1030nm-1040nm as reported by various groups [1, 2], we find that accounting for the thermal sensitivity in the 1018nm laser design is also critical to power scaling.
© 2017 IEEE
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