Diode-Pumped Thulium (Tm)/Holmium (Ho) Composite Fiber 2.1-µm Laser

Report No. ARL-TR-7452
Authors: G Alex Newburgh and Krysta Boccuzzi
Date/Pages: September 2015; 18 pages
Abstract: We demonstrate the world's first composite fiber laser of holmium-core and thulium-doped cladding. The composite fiber was optically pumped by an 803-nm fiber coupled diode source and was demonstrated to emit at 2020 nm with 29% slope efficiency and at 2070 nm at 4% optical-to-optical with a peak power of 1.5 W.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2015