TITLE

Self-organized periodic domain structure for second harmonic generations in ferroelastic β′-(Sm,Gd)2(MoO4)3 crystal lines on glass surfaces

AUTHOR(S)
Tsukada, Yuta; Honma, Tsuyoshi; Komatsu, Takayuki
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/26/2009, Vol. 94 Issue 4, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Ferroelastic β′-(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 μm/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.
ACCESSION #
36434953

 

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