Abstract
We found that tetragonal Gd0.5Lu0.5VO4—known as host-crystal for Ln3+-lasants—is an attractive optical material for Raman laser converters. We discovered and investigated its almost sesqui-octave Stokes and anti-Stokes lasing comb resulting from four SRS-promoting vibration modes in combination with cascaded and cross-cascaded many-phonon χ(3)-nonlinear interactions. Furthermore, estimations of the steady-state Raman gain coefficient have been performed.
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Acknowledgments
The authors wish to note that the investigations were considerably promoted through mutual scientific help within the "Joint Open Laboratory for Laser Crystals and Precise Laser Systems", and were stimulated by research programs of the Institute of Crystallography of the Russian Academy of Sciences, by the Institute of Optics and Atomic Physics of the Technical University of Berlin, by the Institute for Laser Science of the University of Electro-Communications. One of us (A.A.K) is grateful also to the Fundamental Program "Extreme Light Fields and Their Applications" of the Presidium of Russian Academy of Sciences, to the Russian Foundation for Basic Research, and to the Alexander von Humboldt Foundation.
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Kaminskii, A.A., Lux, O., Rhee, H. et al. Crystal-host Gd0.5Lu0.5VO4 for Ln3+-lasants: a new high-gain many-phonon χ(3)-active tetragonal vanadate—SRS spectroscopy and nonlinear-laser effects. Appl. Phys. B 109, 649–658 (2012). https://doi.org/10.1007/s00340-012-5233-0
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DOI: https://doi.org/10.1007/s00340-012-5233-0