【文章名】Self-organized periodic domain structure for second harmonic generations in ferroelastic beta '-(Sm,Gd)(2)(MoO4)(3) crystal lines on glass surfaces (vol 94, art no 041915, 2009) - art. no. 059901
Self-organized periodic domain structure for second harmonic generations in ferroelastic beta '-(Sm,Gd)(2)(MoO4)(3) crystal lines on glass surfaces (vol 94, art no 041915, 2009) - art. no. 059901
[摘要]：Ferroelastic beta(')-(Sm,Gd)(2)(MoO4)(3) (SGMO) crystal lines are patterned on the surface of Sm2O3-Gd2O3-MoO3-B2O3 glasses by continuous wave Yb:YVO4 laser irradiations (wavelength is 1080 nm, power is 1.2 W and scanning speed is 5 mu m/s). Crystal lines show self-organized periodic domain structures with periodic refractive index changes. The intensity of second harmonic (SH) waves changes periodically depending on the domain structure. It is proposed from polarized micro-Raman scattering spectra and the azimuthal dependence of SH intensities that the orientation of (MoO4)(2-) tetrahedra in SGMO crystals changes gradually and periodically along the crystal line growth direction due to the spontaneous strains in SGMO crystals.
