Stimulated Raman scattering and cascaded nonlinear laser (χ(3) ↔ χ(2)) effects in tetragonal non-centrosymmetric Li2B4O7 single crystals

Multiple stimulated Raman scattering (SRS) and cascaded nonlinear χ(3) ↔ χ(2) generation in tetragonal non-centrosymmetric Li2B4O7 crystal were observed under picosecond Nd3+:Y3Al5O12 laser excitation. All registered Stokes and anti-Stokes lasing components in the visible and near-IR were identified and attributed to the SRS-promoting vibration modes of the studied crystal. We classify the Li2B4O7 crystals as a promising media for up- and down-Raman laser-frequency converters. In the work a brief review of nonlinear-laser properties of SRS-active borate crystals is given.

[1]  G. L. Paul,et al.  Raman spectrum of Li2B4O7 , 1982 .

[2]  A. Möller,et al.  Linear Optical Properties of the Nonlinear Optical Calcium and Strontium Tartrato‐Antimonates (III), Ca[Sb2 {(+) ‐ C4H2O6}2] x2H2O and Sr[Sb2{(+) ‐ C4H2O6}2 ] x2H2O , 1999 .

[3]  J. Krogh-Moe.  The crystal structure of lithium diborate, Li2O.2B2O3 , 1962 .

[4]  S. Bagayev,et al.  5.5 J pyrotechnically pumped Nd3+:Y3Al5O12 ceramic laser , 2006 .

[5]  S. Haussühl,et al.  Electrooptical coefficients and temperature and pressure derivatives of the elastic constants of tetragonal Li2B4O7 , 1989 .

[6]  J. Krogh-Moe.  Refinement of the crystal structure of lithium diborate Li2O.2B2O3 , 1968 .

[7]  B. James,et al.  The pressure and temperature dependences of the elastic behaviour of lithium tetraborate , 1990 .

[8]  A. Kaminskii.  Modern developments in the physics of crystalline laser materials , 2003 .

[9]  P. Becker,et al.  Top-seeded growth of bismuth triborate, BiB3O6 , 1999 .

[10]  Y. Ishibashi,et al.  Raman scattering study of lithium diborate (Li2B4O7) single crystal , 1990 .

[11]  Hans Joachim Eichler,et al.  Monoclinic bismuth triborate BiB3O6 – a new efficient χ(2)+χ(3)-nonlinear crystal: multiple stimulated Raman scattering and self-sum-frequency lasing effects , 2002 .

[12]  F. W. Ainger,et al.  Lithium tetraborate: a new temperature-compensated SAW substrate material , 1981 .

[13]  Richard L. Sutherland,et al.  Handbook of Nonlinear Optics , 1996 .

[14]  A. Kaminskiĭ,et al.  Crystalline Lasers: Physical Processes and Operating Schemes , 1996 .

[15]  Valentin Petrov,et al.  Vacuum ultraviolet application of Li2B4O7 crystals: Generation of 100 fs pulses down to 170 nm , 1998 .

[16]  Li Jin-long,et al.  Bridgman growth of Li2B4O7 crystals , 1990 .

[17]  J. Greedan,et al.  The Czochralski growth of LiBO2 and Li2B4O7 , 1977 .

[18]  Andrzej Majchrowski,et al.  Czochralski growth of lithium tetraborate single crystals , 1991 .

[19]  D. Nikogosyan,et al.  Nonlinear Optical Crystals: A Complete Survey , 2005 .

[20]  Yaochun Shen.  Principles of nonlinear optics , 1984 .

[21]  B. Edĺen.  The Refractive Index of Air , 1966 .

[22]  F. Balembois,et al.  Generation of 90-fs pulse from a modelocked diode-pumped Yb3+:Ca4GdO(BO3)3 laser , 2018 .

[23]  T. Ishikawa,et al.  Observation of X-Ray Diffraction Spots from the (√3 ×√3)R30° Bi Structure on the Si(111) Surface under the Condition of Large Incidence Angle , 1985 .

[24]  K. Byrappa,et al.  Crystal growth and electrical properties of Li_2B_4O_7 , 1996 .

[25]  A. A. Pavlyuk,et al.  High-order stimulated Raman scattering combined with second harmonic generation in [χ(2)+χ(3)]-nonlinear LaBGeO5, β'-Gd2(MoO4)3 and Ca4Gd(BO3)3O laser host crystals under picosecond excitation , 1998 .

[26]  M. Ishii,et al.  Growth of high quality 4 in diameter Li2B4O7 single crystals , 2001 .

[27]  G. Pasmanik.  Stimulated Raman scattering augments DPSS lasers , 1999 .

[28]  K. Ueda,et al.  Steady-state picosecond stimulated Raman scattering in two host-crystals for Ln3+ and Ln2+ lasants , 2006 .

[29]  A. A. Kaminskii,et al.  Pure and Nd3+-, Pr3+-Ion Doped Trigonal Acentric LaBGeO5 Single Crystals Nonlinear Optical Properties, Raman Scattering, Spectroscopy, Crystal-Field Analysis, and Simulated Emission of Their Activators , 1991 .

[30]  Petra Becker,et al.  Borate Materials in Nonlinear Optics , 1998 .

[31]  James C. Barnes,et al.  Tetragonal vanadates YVO4 and GdVO4 – new efficient χ(3)-materials for Raman lasers , 2001 .

[32]  D. Jaque,et al.  Properties of Nd3+-doped and undoped tetragonal PbWO4, NaY(WO4)2, CaWO4, and undoped monoclinic ZnWO4 and CdWO4 as laser-active and stimulated raman scattering-active crystals. , 1999, Applied optics.

[33]  Satoshi Uda,et al.  Linear and nonlinear optical properties of lithium tetraborate , 1998 .

[34]  S. Nagel,et al.  Crystal Growth of Li2B4O7 , 1977 .

[35]  B. Tell,et al.  Raman Effect in Zinc Oxide , 1966 .

[36]  Shoji Tange,et al.  Second harmonic generation in Li2B4O7 , 1991 .

[37]  Yusaburo Segawa,et al.  Growth and ultraviolet application of Li2B4O7 crystals: Generation of the fourth and fifth harmonics of Nd:Y3Al5O12 lasers , 1997 .

[38]  Jung Jin Ju,et al.  Characteristics of critically phase-matched second-harmonic generation of a Li2B4O7 crystal grown by the Czochralski method , 1994 .

[39]  F. A. Hummel,et al.  Studies in Lithium Oxide Systems: XII, Li2O‐B2O3‐Al2O3 , 1958 .

[40]  A. Kahn-Harari,et al.  Infrared laser performance and self-frequency doubling of Nd3+:Ca4GdO(BO3)3 (Nd:GdCOB) , 1997 .

[41]  T. Shiosaki,et al.  Elastic, Piezoelectric, Acousto-Optic and Electro-Optic Properties of Li2B4O7 , 1985 .

[42]  J. Liebertz,et al.  Crystal growth from melts of high viscosity , 1983 .

[43]  Gerard Aka,et al.  Ytterbium-doped Ca 4 GdO(BO 3 ) 3 : an efficient infrared laser and self-frequency doubling crystal , 1999 .

[44]  D. Rousseau,et al.  Normal mode determination in crystals , 1981 .