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Many-phonon stimulated Raman scattering and related cascaded and cross-cascaded χ(3)-nonlinear optical effects in melilite-type crystal Ca2ZnSi2O7

✍ Scribed by A.A. Kaminskii; H. Rhee; O. Lux; H.J. Eichler; L. Bohatý; P. Becker; J. Liebertz; K. Ueda; A. Shirakawa; V.V. Koltashev; J. Hanuza; J. Dong; D.B. Stavrovskii

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
566 KB
Volume
8
Category
Article
ISSN
1612-2011

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✦ Synopsis

Different nonlinear optical interactions in a novel SRS-active non-centrosymmetric tetragonal crystal Ca 2 ZnSi 2 O 7 were investigated at room and cryogenic (≈ 9 K) temperature under picosecond laser pumping. In addition to measuring octave-spanning Stokes and anti-Stokes combs we observed several cascaded and cross-cascaded χ (3) ↔ χ (3) effects involving several SRS-active phonons. All recorded Raman-induced lasing lines in the visible and near-IR range are identified and attributed to the SRS-promoting vibration transitions. A brief review of SRS-and Nd 3+ -doped laser-active melilite-type crystals is given as well. Transmission, % 100 80 60 40 20 0 6.0 5.0 4.0 3.0 2.0 1.0 1.5 0.5 Wavelength, μm Ca 2 ZnSi 2 O 7 100 80 60 40 20 0 0.20 0.25 0.30 0.40 0.35 ≈ 4.7 ≈ 0.22

Transmission spectrum of a crystal of tetragonal Ca2ZnSi2O7, recorded at room temperature using a (100) plate of ≈ 1.33 mm thickness

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