Journal
OPTICS LETTERS
Volume 36, Issue 18, Pages 3642-3644Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.36.003642
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Funding
- Australian Research Council
- Centres of Excellence
- Fundamental Research Funds for the Central Universities [ZYGX2009J053]
- National Natural Science Foundation of China (NSFC) [60925019]
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A high-power diode-cladding-pumped Ho(3+)-doped fluoride glass fiber laser operating in cascade mode is demonstrated. The (5)I(6)->(5)I(7) and (5)I(7)->(5)I(8) laser transitions produced 0.77W at a measured slope efficiency of 12.4% and 0.24 W at a measured slope efficiency of 5.2%, respectively. Using a long fiber length, which forced a large threshold for the (5)I(7)->(5)I(8) transition, a wavelength of 3.002 mu m was measured at maximum output power, making this system the first watt-level fiber laser operating in the mid-IR. (C) 2011 Optical Society of America
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