Quasipermanent hole-photorefractive and photochromic effects in Bi12TiO20 crystals

Autor:	P. M. Garcia, J. Frejlich
Rok vydání:	1992
Předmět:	Physics and Astronomy (miscellaneous) business.industry Chemistry General Engineering Holography Phase (waves) General Chemistry Photorefractive effect Diffraction efficiency law.invention Photochromism Four-wave mixing Optics Amplitude law Erasure General Materials Science business
Zdroj:	Applied Physics A Solids and Surfaces. 55:49-54
ISSN:	1432-0630 0721-7250
DOI:	10.1007/bf00324601
Popis:	We report the presence of quasipermanent effects of photochromic and hole-photorefractive nature in Bi12TiO20 (BTO) at low irradiance at 514.5 nm. A new selective two-wave mixing (S2WM) detection technique was used that allows to separately detect phase and amplitude gratings. S2WM is used in this work for operating a self-stabilized recording setup which allows to produce unusually large quasipermanent effects. We also show that stabilized recording is necessary to obtain reliable information from hologram erasure experiments. Results reported in this paper show the complex nature of recording in BTO and the capabilities of stabilized recording and S2WM for fundamental and applied research on photorefractive crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::822fa7fc769709b446151716e650ac52 https://doi.org/10.1007/bf00324601 Zobrazit plný text záznamu Full text from SpringerLink