Non-centrosymmetric tetragonal Sr2ZnGe2O7 - a novel melilite-type nonlinear-laser crystal offering χ(2)-, χ(3)-, and cascaded χ(3) ⇆ χ(2)-interactions

被引：26

作者：

Becker, P. ^{[1
]}

Bohaty, L. ^{[1
]}

Liebertz, J. ^{[1
]}

Kleebe, H. -J ^{[2
]}

Muller, M. ^{[2
]}

Eichler, H. J. ^{[3
]}

Rhee, H. ^{[3
]}

Hanuza, J. ^{[4
,5
]}

Kaminskii, A. A. ^{[6
]}

机构：

[1] Univ Cologne, Inst Crystallog, D-50674 Cologne, Germany

[2] Tech Univ Darmstadt, Inst Appl Geosci, D-64287 Darmstadt, Germany

[3] Tech Univ Berlin, Inst Opt & Atom Phys, D-10623 Berlin, Germany

[4] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

[5] Wroclaw Univ Econ, Inst Chem & Food Technol, Dept Bioorgan Chem, PL-50345 Wroclaw, Poland

[6] Russian Acad Sci, Inst Crystallog, Moscow 119333, Russia

来源：

LASER PHYSICS LETTERS | 2010年 / 7卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

stimulated Raman scattering; SRS; second harmonic generation; SHG; third harmonic generation; THG; Stokes and anti-Stokes lasing comb; cascaded self-frequency-mixing; Raman laser shifter; non-centrosymmetric crystal; Sr2ZnGe2O7; melilite; STIMULATED RAMAN-SCATTERING; MANY-PHONON SRS; NON-ENANTIOMORPHOUS CRYSTAL; 3RD HARMONIC-GENERATION; SESQUI-OCTAVE STOKES; SINGLE-CRYSTALS; OPTICAL-PROPERTIES; LUMINESCENCE PROPERTIES; VIBRATIONAL-SPECTRA; LASING PROPERTIES;

D O I：

10.1002/lapl.200910160

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nonlinear optical interactions based on chi((2)) and chi((3)) effects were investigated in the tetragonal, non-centrosymmetric melilite-type crystal Sr2ZnGe2O7. Among them are Stokes and anti-Stokes lasing comb generation, SHG, THG, SFG, and cascaded chi((3)) <-> chi((2)) self-frequency conversion, arising from one-micron picosecond pumping. All lasing components were identified and attributed to a single SRS-promoting vibration mode omega(SRS) approximate to 778 cm(-1). The crystals possess a wide transparency range from approximate to 0 25 mu m to approximate to 6.2 mu m, their refractive indices show a small birefringence (with an isoindex point at 0.4677 mu m wavelength) that does not allow phase matching for chi((2))-based conversion processes [GRAPHICS] The fully symmetric A(1) (nu(s))-vibration mode of the two [GeO3] parts of the [Ge2O7] group (C) 2010 by Astro Ltd Published exclusively by WILEY-VCH Verlag GmbH & Co KGaA

引用

页码：367 / 377

页数：11

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