EFFECT OF ALLOYING BY RARE-EARTH ELEMENTS (Nd, Dy, Er, Lu) ON THE OPTICAL PROPERTIES OF AIIBVI CRYSTALS

Abstract

The paper establishes the effect of doping with rare earth elements (Nd, Dy, Er, Lu) crystals on their optical, nonlinear optical properties. From experimental results determined: 95, 91, 98, 87 meV для AgGaGe₃Se₈:Nd; AgGaGe₃Se₈:Dy; AgGaGe₃Se₈:Er; AgGaGe₃Se₈:Lu respectively. Presented an estimate of the band gap for all compounds at room temperature. The generation of the second harmonic is investigated using the method of Kurtz-Perry powder, which gives a relative estimate of the efficiency of nonlinear optical transformations. Approximation of the powder particles are considered single crystals with similar sizes to 100 µm.