Title :
Nonlinear optical properties of Zn/sub 1-x/Ag/sub x/Se mixed crystals
Author :
Derkowska, B. ; Sahraoui, B. ; Kityk, I.V. ; Berdowski, J.
Author_Institution :
Inst. of Phys., Nicholas Copernicus Univ., Torun, Poland
Abstract :
Summary form only given. We pursue investigations on new ZnAgSe mixed crystals. We perform calculation of nonlinear optical susceptibilities in ZnAgSe solid alloys, using the ab initio norm-conserving pseudopotential (NCPP) and linear combination of atomic orbitals (LCAO) methods. Comparison between the calculated and experimental data obtained from the photo-induced second harmonic generation (PISHG), show a good agreement with our theoretical approach. We demonstrate that the imaginary part of the fourth rank optical susceptibility depends on the concentration of the free carriers.
Keywords :
II-VI semiconductors; LCAO calculations; ab initio calculations; nonlinear optical susceptibility; optical harmonic generation; optical materials; silver compounds; zinc compounds; LCAO method; Zn/sub 1-x/Ag/sub x/Se mixed crystals; ZnAgSe; ZnAgSe mixed crystals; ZnAgSe solid alloys; ab initio norm-conserving pseudopotential method; fourth rank optical susceptibility; free carrier concentration; linear combination of atomic orbitals methods; nonlinear optical properties; nonlinear optical susceptibilities; photo-induced second harmonic generation; Crystalline materials; Crystals; Earth; Luminescence; Neodymium; Nonlinear optics; Optical materials; Polarization; Zinc;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.910035
