Open AccessHighly 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) - materials science , laser , diode , yttrium , optics , analytical chemistry (journal) , physics , optoelectronics , chemistry , metallurgy , oxide , chromatography
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.