Near-infrared response of photorefractive crystals (K₀.₅Na₀.₅)₀.₂(Sr₀.₇₅Ba₀.₂₅)₀.₉Nb₂O₆:Cu and LiNbO₃:Fe and LiNbO₃:Fe
Author/Creator
Author/Creator ORCID
Date
Type of Work
Department
Program
Citation of Original Publication
Guo, Bo, Li Yan, Heyi Zhang, Xuehua He, and Yanhua Shih. “Near-infrared Response of Photorefractive Crystals (K₀.₅Na₀.₅)₀.₂(Sr₀.₇₅Ba₀.₂₅)₀.₉Nb₂O₆:Cu and LiNbO₃:Fe.” Journal of Applied Physics 79, no. 1 (1996): 72–76. https://doi.org/10.1063/1.360792.
Rights
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Guo, Bo, Li Yan, Heyi Zhang, Xuehua He, and Yanhua Shih. “Near-infrared Response of Photorefractive Crystals (K₀.₅Na₀.₅)₀.₂(Sr₀.₇₅Ba₀.₂₅)₀.₉Nb₂O₆:Cu and LiNbO₃:Fe.” Journal of Applied Physics 79, no. 1 (1996): 72–76. https://doi.org/10.1063/1.360792. and may be found at https://pubs.aip.org/aip/jap/article/79/1/72/492391/Near-infrared-response-of-photorefractive-crystals.
Abstract
Material response relevant to volume holographic storage for photorefractive crystals (K₀.₅Na₀.₅)₀.₂(Sr₀.₇₅Ba₀.₂₅)₀.₉Nb₂O₆:Cu (KNSBN:Cu) and LiNbO₃:Fe was studied in the near-infrared region. The dark decay time for KNSBN:Cu was measured to be on the order of 10⁶ s. The light-induced erasure time at the 1 mW/cm² read beam intensity can be ≳1000 h for both KNSBN:Cu and LiNbO₃:Fe. Read beam diffraction efficiencies of 28.7% for KNSBN:Cu and 50% for LiNbO₃:Fe were obtained at 706 nm when the refractive index grating was written at 706 nm. The decay rate of the refractive index grating with an extraordinary-wave read beam is about 3.6 times smaller than that with an ordinary-wave read beam for KNSBN:Cu. The results show that near-infrared light can be used to read holograms in the photorefractive volume holographic storage application.