Neste trabalho estudamos o registro holográfico em cristais fotorrefrativos, na presença de
auto-difração e forte absorção óptica, utilizando técnicas holográficas. Utilizamos os …

Este trabalho apresenta o estudo e o desenvolvimento de dois arranjos de interferometria
holográfica utilizando como meio de registro holográfico cristais fotorrefrativos de …

Direct holographic recording in undoped Bi 12 TiO 20 crystal at 1064 nm is investigated
aiming the characterization of diffraction efficiency under action of applied dc electric field (E …

In this paper, we studied recording and erasure of photorefractive holographic gratings
recorded at 780 nm in an undoped Bi 12 TiO 20 (BTO) crystal sample under the action of an …

Experimental data on some basic characteristics of holograms recorded in doped and
undoped BTO crystals and fixed at room temperature such as diffraction efficiency and …

We present a recent development in holography with multimode, large free-spectral range
(FSR) diode lasers in photorefractive sillenite crystals. A novel refractometry method based …

We discuss the difficulties and propose a technique to measure the diffraction efficiency of
volume holograms exhibiting a high Bragg angular selectivity recorded in samples …

We investigate recording and erasure of photorefractive holographic gratings in an undoped
Bi_12TiO_20 crystal in a moderate to high intensity regime of the recording beams at 639.7 …

Abstract The parameters of Bi 12 TiO 20 crystals grown with bismuth oxide of different
degrees of purity were measured by a holographic recording technique in an external ac …

We report a new procedure allowing one to use fringe-locked running hologram
experiments to characterize photorefractive materials in a very simple, reliable and direct …