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Orthorhombic (LiNbGeO5): efficient stimulated Raman scattering and tunable near-infrared laser emission from chromium doping |
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| Authors: | AA Kaminskii HJ Eichler D Grebe R Macdonald J Findeisen SN Bagayev AV Butashin AF Konstantinova H Manaa R Moncorge F Bourgeois G Boulon |
| Affiliation: | a Institute of Crystallography, Russian Academy of Sciences, Leninskii prospekt 59, 117333 Moscow, Russia b Optical Institute, Technical University of Berlin, Strasse des 17. Juni 135, Berlin D-10623, Germany c Institute of Laser Physics, Russian Academy of Sciences, Prospekt Lavrent'eva 13/3, Novosibirsk 630090, Russia d University Lyon 1, UMR 5620 CNRS, 43 bd du 11 Novembre 1918, Villeurbanne Cedex 69622, France |
| Abstract: | The structural, optical, spectroscopic, and laser properties of pure and chromium-doped lithium–niobium germanate (LiNbGeO5) single crystals are discussed in this paper. Efficient stimulated Raman scattering (SRS), investigated with the one-micron fundamental and second harmonic wave of a picosecond Nd3+:Y3Al5O12 laser, reveals the potential of this new cubic non-linear susceptible (χ(3)) optical material for realizing effective solid state Raman shifters. The data are analyzed and compared with spectroscopic data from spontaneous Raman scattering. Pulsed tunable laser action of chromium-doped LiNbGeO5 crystals was demonstrated in the spectral range between 1.3 and 1.52 μm at cryogenic temperature and around 1.4 μm at room temperature. Due to its excellent crystalline and optical properties, LiNbGeO5 is a promising material for tunable near-infrared lasers with integrated frequency converters. |
| Keywords: | Raman scattering Cr doped crystals Cryogenic temperature |
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