Er:KY 3 F 10 laser at 2.80  µm

We report on the mid-infrared laser operation of a cubic 15 at.% E r 3 + : K Y 3 F 10 crystal. In the quasi-continuous-wave regime, the peak power reaches 255 mW at 2.80 µm (the 4 I 11 / 2 → 4 I 13 / 2 transition) with a slope efficiency of 10.9% and a laser threshold of 58 mW. Two pumping schemes (...

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Bibliographic Details
Published in:Optics letters 2021-11, Vol.46 (22), p.5739
Main Authors: Basyrova, Liza, Loiko, Pavel, Doualan, Jean-Louis, Benayad, Abdelmjid, Braud, Alain, Labbé, Christophe, Camy, Patrice
Format: Article
Language:English
Subjects:
Optics
Physics
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Summary:We report on the mid-infrared laser operation of a cubic 15 at.% E r 3 + : K Y 3 F 10 crystal. In the quasi-continuous-wave regime, the peak power reaches 255 mW at 2.80 µm (the 4 I 11 / 2 → 4 I 13 / 2 transition) with a slope efficiency of 10.9% and a laser threshold of 58 mW. Two pumping schemes (to the 4 I 11 / 2 and 4 I 9 / 2 states) are compared. The emission properties of the E r 3 + ions in K Y 3 F 10 are studied, indicating high stimulated-emission cross-section of 0.57 × 10 − 20 c m 2 at 2.80 µm, a large gain bandwidth of 40 nm, and a long 4 I 11 / 2 state lifetime of 4.64 ms.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.439457