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Compact CW mid-IR Fe:ZnSe coherent source pumped by Er:ZBLAN fiber laser
Author(s): 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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Paper Abstract

We report the first-of-its-kind compact and robust coherent source operating in mid-IR based on Fe:ZnSe chalcogenide gain medium optically pumped by Er:ZBLAN fiber laser. In the research, we study the CW operation of cryogenically cooled laser based on Fe:ZnSe single crystals with different doping level grown from the vapor phase on a single-crystal seed by using the concurrent-doping technology. The maximal output power achieved is 2.1 W with 59% slope efficiency with respect to absorbed pump power, which is close to the Stokes shift limit. Measured Fe:ZnSe output spectra indicate a significant influence of re-absorption on generation wavelength. For high doping levels and output powers, spectrum shifts to the red wing, which makes possible continuous tuning from 4012 to 4198 nm. As well, tunability of the laser in a wide range of temperature is investigated.

Paper Details

Date Published: 26 April 2019
PDF: 8 pages
Proc. SPIE 11033, High-Power, High-Energy, and High-Intensity Laser Technology IV, 110330G (26 April 2019); doi: 10.1117/12.2520782
Show Author Affiliations
A. V. Pushkin, M.V. Lomonosov Moscow State Univ. (Russian Federation)
E. A. Migal, M.V. Lomonosov Moscow State Univ. (Russian Federation)
H. Uehara, Osaka Univ. (Japan)
K. Goya, Osaka Univ. (Japan)
S. Tokita, Osaka Univ. (Japan)
M. P. Frolov, P. N. Lebedev Physical Institute (Russian Federation)
Yu V. Korostelin, P. N. Lebedev Physical Institute (Russian Federation)
V. I. Kozlovsky, P. N. Lebedev Physical Institute (Russian Federation)
Ya. K. Skasyrsky, P. N. Lebedev Physical Institute (Russian Federation)
F. V. Potemkin, M.V. Lomonosov Moscow State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11033:
High-Power, High-Energy, and High-Intensity Laser Technology IV
Joachim Hein; Thomas J. Butcher, Editor(s)

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