16 May 2012 Tunable Fe,Cr:ZnMgSe gain-switched mid-IR laser operating at room temperature
Author Affiliations +
Proceedings Volume 8433, Laser Sources and Applications; 84331I (2012); doi: 10.1117/12.921595
Event: SPIE Photonics Europe, 2012, Brussels, Belgium
The goal of this work was to design and investigate the gain switched new Fe,Cr:ZnMgSe laser operating at the room temperature. The pumping was provided by the electro-optically Q-switched Er:YAG laser with the oscillation wavelength of 2.937 μm which matching the absorption line of the Fe,Cr:ZnMgSe crystal. The Q-switched operation was obtained by the Brewster angle cut LiNbO3 Pockels cell placed between the rear mirror and the laser active medium. The output radiation parameters were: the energy of 10 mJ, pulse duration of 120 ns, and repetition rate 1 Hz. The pump radiation was directed into the Fe,Cr:ZnMgSe crystal placed inside the 16 mm long hemi-spherical cavity formed by the dichroic pumping mirror (T = 86 % at 2.94 μm and R = 100% for 4 - 5 μm) and the output coupler with the reflectance R = 95 % at 4 - 5 μm and radius of curvature r = 500 mm. The maximum output Fe,Cr:ZnMgSe laser energy was 160 μJ corresponding the slope efficiency 4 % (with respect to absorbed energy). The generated radiation wavelength was 4.8 μm with the linewidth of 100 nm (FWHM). The output beam spatial profile was approximately Gaussian in both axes. Laser tuning properties were investigated by the Lyot filter (MgF2 plate, 2 mm thick) inserted into the resonator providing the tuning range from 4.5 to 4.9 μm. The results were compared with the Fe:ZnSe crystal operated at the same conditions.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Helena Jelínková, Maxim E. Doroshenko, Jan Sulc, Michal Jelínek, Michal Nemec, Miroslav Cech, Tasoltan T. Basiev, Y. A. Zagoruiko, N. O. Kovalenko, A. S. Gerasimenko, V. M. Puzikov, V. K. Komar, "Tunable Fe,Cr:ZnMgSe gain-switched mid-IR laser operating at room temperature", Proc. SPIE 8433, Laser Sources and Applications, 84331I (16 May 2012); doi: 10.1117/12.921595; https://doi.org/10.1117/12.921595



Er:YAG lasers


Laser crystals




Tunable gain-switched chromium YAG laser
Proceedings of SPIE (January 05 1994)
2.94 um Er YAG Q switched laser with FE2+ ...
Proceedings of SPIE (April 04 2007)
Diode-pumped lasers based on oxide crystals
Proceedings of SPIE (November 14 2003)
Ti:Al2O3 and Cr:Mg2SiO4 lasers
Proceedings of SPIE (March 01 1995)
Fe ZnSe laser comparison of active materials grown...
Proceedings of SPIE (March 03 2011)

Back to Top