Title :
Nonlinear optical properties of CdI2 single crystals, doped with 3D-metals iodides
Author :
Yurchenko, O.N. ; Olekseyuk, I.D.
Author_Institution :
Volyn State Univ., Lutsk, Ukraine
Abstract :
Wide band gap layered single crystals CdI2 (4H) have close-packed hexagonal lattice. Doped with CuI and NiI2 crystals for investigations were grown from the melt by the Bridgman method. The layered crystals possess surfaces of high quality (mirror-like quality), which are parallel to the layers. Doping improves nonlinear properties of crystals CdI2; in particular increases the efficiency of generation of the second harmonic (SHG). SHG temperature dependencies in NiI2 and CuI-doped crystals are investigated. All studied samples were pre-treated in magnetic fields at 4.2 K for 4 hrs. SHG signal decreases with temperature. Thus the ordering in impurity atom location is accompanied by the appearance of polarization charges on crystals surface and by increased lattice eccentricity.
Keywords :
copper compounds; crystal growth from melt; magneto-optical effects; nickel compounds; optical harmonic generation; optical materials; 4 h; 4.2 K; Bridgman method; CdI2; CdI2 single crystals; CuI-doped crystals; NiI2; NiI2 crystals; crystals surface; impurity atom location; lattice eccentricity; magnetic field treatment; metal iodides; nonlinear optical properties; polarization charges; second harmonic generation; wide band gap; Crystals; Doping; Impurities; Lattices; Magnetic fields; Nonlinear optics; Optical harmonic generation; Polarization; Temperature dependence; Wideband;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. 5th International Workshop on
Print_ISBN :
0-7803-7709-5
DOI :
10.1109/LFNM.2003.1246090
