Mechanisms of the dark decay of holograms in LiNbO/sub 3/:Fe crystals

Author

Yunping Yang ; Nee, I. ; Buse, K. ; Psaltis, Demetri

Author_Institution

Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA

fYear

2001

fDate

11-11 May 2001

Firstpage

510

Abstract

Summary form only given. Two mechanisms of dark decay, proton compensation and electron tunneling have been identified. In LiNbO/sub 3/:Fe with doping levels less than 0.05 wt%, proton compensation dominates the dark decay, while in crystals with doping levels as high as 0.25 wt%, electron tunneling dominates. For crystals with doping levels between 0.05 wt% and 0.25 wt%, both mechanisms contribute significantly to the dark decay, and the single Arrhenius law does not hold anymore with a single activation energy.

Keywords

compensation; dark conductivity; holography; iron; lithium compounds; photorefractive materials; space charge; tunnelling; 30 to 180 C; LiNbO/sub 3/:Fe; LiNbO/sub 3/:Fe crystals; activation energies; dark conductivity; dark decay mechanisms; doping levels; electrical space-charge field; electron tunneling; holograms; holographic data storage; photorefractive fixing; proton compensation; single Arrhenius law; time constants; Crystals; Doping; Electronic mail; Electrons; Holographic optical components; Iron; Protons; Temperature; Time measurement; Tunneling;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-662-1

Type

conf

DOI

10.1109/CLEO.2001.948106

Filename

948106