Highly efficient Er:YAP laser with 6.9 W of output power at 2920 nm | Zendy

Weichao Yao | Zendy; Hiyori Uehara | Zendy; Hiroki Kawase | Zendy; Hengjun Chen | Zendy; Ryo Yasuhara | Zendy

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Highly efficient Er:YAP laser with 6.9 W of output power at 2920 nm

Author(s) -

Weichao Yao,

Hiyori Uehara,

Hiroki Kawase,

Hengjun Chen,

Ryo Yasuhara

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.395802

Subject(s) - slope efficiency , materials science , laser , optics , yttrium , diode , optoelectronics , power (physics) , continuous wave , doping , fiber laser , physics , metallurgy , oxide , quantum mechanics

We report on the efficient high-power operation of a laser-diode-pumped Er 3+ -doped yttrium aluminum perovskite (Er:YAP) laser in the 3 μ 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 μ m Er 3+ -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.

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