Photorefractive hologram fixing by a 4 K cooldown to the phase transition in K1−xLixTa1−yNbyO3

Autor:	Aharon J. Agranat, Michal Balberg, Meir Razvag
Rok vydání:	1996
Předmět:	Phase transition Materials science Physics and Astronomy (miscellaneous) Condensed matter physics business.industry Phase (waves) Photorefractive effect Grating Diffraction efficiency Space charge Tantalate Optics business Diffraction grating
Zdroj:	Applied Physics Letters. 68:2469-2471
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.115823
Popis:	A fixing process of photorefractive holograms is reported. The process is based on the formation of an ionic space charge which becomes mobile at the phase transition temperature. A fixed grating was formed in paraelectric potassium lithium niobate tantalate by a 4 K cooldown to Tc, and a warmup back to the paraelectric phase. The diffraction efficiency of the fixed grating was 66% of the original photorefractive space charge grating.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2e9552fedc0070f39a95178d5b059c75 https://doi.org/10.1063/1.115823 Zobrazit plný text záznamu