Photorefractive materials combine photoconductive and electro-optic properties: light affects
their electrical conductivity; their optical properties (refractive index, etc.) are affected by …

A review of investigations of nonlinear refraction and nonlinear absorption of light in
semiconductors, fullerenes, dyes, metals, and crystals is given. The results of measurements …

Negative nonlinear refraction is observed in the photorefractive crystal Bi 12 GeO 20 (BGO)
using 7-ns, 532-nm pulsed radiation. The nonlinear refractive index of BGO is measured to …

Дан обзор работ по исследованию нелинейного преломления и нелинейного
поглощения полупроводников, фуллеренов, красителей, металлов и кристаллов …

Various newly developed materials were recently treated from the point of view of their
nonlinear optical properties. Below we briefly show the tendencies in the nonlinear optical …

High quality bismuth germanium oxide single crystals were irradiated by a femtosecond
pulsed laser beam of increasing power. Analyses performed on irradiated and unirradiated …

This paper reviews the potential of photorefractive single crystals for optical limiting
applications and highlights the optical limiting characteristics of undoped and iron doped …

Bismuth germanium oxide (Bi12GeO20) from the sillenite group of cubic crystals is
commonly abbreviated as BGO or s-BGO. Due to its fitting optical characteristics, such as …

We report preliminary results on subsurface spectroscopy inside heterogeneous materials
using four wave mixing phase conjugation. For our test material we use an inert plastic …

The nonlinear transmission change of a weak beam in the presence of an intense beam is
measured and analyzed in various absorbing and scattering materials. Simultaneous …