Orthorhombic ferroelectric and ferroelastic Gd2(MoO4)3 crystal — a new many-purposed nonlinear and optical material: efficient multiple stimulated Raman scattering and CW and tunable second harmonic generation

Laser-induced crystallization of β′-RE2(MoO4)3 ferroelectrics (RE: Sm, Gd, Dy) in glasses and their surface morphologies

“…In the structure of the acentric orthorhombic b 0 -RE 2 (MoO 4 ) 3 phase, REO 7 polyhedra (monocapped trigonal prisms) and MoO 4 tetrahedra are present and they are linked together via common corners [29]. It is, therefore, concluded that the Raman bands observed at $327 and $385 cm À1 in Fig.…”

Molecular Inorganic, Organic Crystalline, and Glassy Materials for Raman Laser Converters

“…For SRS there is no need to have acentric materials, therefore, many of the organic crystals and polymers showing pronounced v (3) properties may be reconsidered for a thus far unexplored direction in the manufacturing of all-solidstate laser frequency converters. states, [9,10,20,21] molybdates, [22,23] borates, [24,25] silicates, [26,27] iodates, [26,28,29] niobates and tantalates, [26,30] nitrates, [31,32] chlorides and bromides, [33±35] aluminates, [36,37] gallates, [38] germanates, [6,39] oxy-fluorides, [40] a first SRS active fluoride, [41] sulfates, [35,42] several organic crystals, [43,44] and new v (3) active nonlinear glasses. [45±47] Some of these are acentric crystals showing also high quadratic nonlinear susceptibilities (v (2) ).…”

Patterning of Ferroelectric .BETA.'-Gd2(MoO4)3 Crystal Lines on the Glass Surface by Transition Metal Atom Heat Processing

“…In the structure of the acentric orthorhombic bö -RE 2 MoO 4 3 phase, REO 7 polyhedra monocapped trigonal prisms and MoO 4 tetrahedra are present and they are linked together via common corners. 31 From previous studies, 28 -30 it is concluded that the Raman bands observed at Ĭ327 and Ĭ385 cm 1 in Fig. 4 correspond to bending modes in MoO 4 tetrahedra and those observed at 735-860 cm 1 and 935-960 cm 1 are assigned to asymmetric and symmetric stretching vibration modes in MoO 4 tetrahedra, respectively.…”