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arXiv · 1811.01682

Compact highly efficient 2.1-W continuous-wave mid-IR Fe:ZnSe coherent source pumped by Er:ZBLAN fiber laser

A. V. Pushkin·E. A. Migal·H. Uehara·K. Goya·S. Tokita·M. P. Frolov·Yu. V. Korostelin·V. I. Kozlovsky·Ya. K. Skasyrsky·F. V. Potemkin
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Abstract

We report the compact and robust coherent source operating in mid-IR based on Fe:ZnSe chalcogenide gain medium optically pumped by Er:ZBLAN fiber laser. The output power of 2.1 W with 59% slope efficiency with respect to absorbed pump power at liquid nitrogen cooling is achieved. We show that strong re-absorption at high pump power and iron ion doping concentrations leads to the continuous tuning of central wavelength from 4012 to 4198 nm. Robustness of high power Er:ZBLAN fiber laser combined with prominent spectroscopic properties of Fe:ZnSe media pave the way for the development of reliable tunable CW mid-IR sources for scientific and industrial purposes.

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A. V. Pushkin, E. A. Migal, H. Uehara, K. Goya, S. Tokita, M. P. Frolov, Yu. V. Korostelin, V. I. Kozlovsky, Ya. K. Skasyrsky, F. V. Potemkin. 2018-11-05. Compact highly efficient 2.1-W continuous-wave mid-IR Fe:ZnSe coherent source pumped by Er:ZBLAN fiber laser. https://doi.org/10.1364/ol.43.005941

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