Journal
OPTICS EXPRESS
Volume 28, Issue 13, Pages 19000-19007Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.395802
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Funding
- Japan Society for the Promotion of Science [15KK0245, 18H01204]
- Amada Foundation [AF2018228-C2, AF-2019221-B3]
- Murata Science Foundation [H31009]
- National Institute for Fusion Science [UFEX5003, ULHH040]
- Grants-in-Aid for Scientific Research [15KK0245] Funding Source: KAKEN
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We report on the efficient high-power operation of a laser-diode-pumped Er3+-doped yttrium aluminum perovskite (Er:YAP) laser in the 3 mu m spectral region at room temperature. 6.9 W of continuous-wave (CW) output power was obtained at 2920 nm. The slope efficiency was as high as 30.6% with respect to the absorbed pump power, which is close to the quantum defect limit (33.4%). To the best of our knowledge, this is the highest CW output power generated from 3 mu m Er3+-doped solid state lasers at room temperature. Furthermore, our analysis has shown that more than 10 W of output power based on Er:YAP is possible by further mitigating the thermal lens effect. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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