Variable gradient refractive index engineering: design, growth and electro-deflective application of KTa1−xNbxO3. Issue 42 (22nd September 2015)

• Record Type: Journal Article
• Authors: Tian, Hao; Tan, Peng; Meng, Xiangda; Hu, Chengpeng; Yao, Bo; Shi, Guang; Zhou, Zhongxiang
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 42(2015)
• Page Start: 10968
• Page End: 10973
• Publication Date: 2015-09-22
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5tc02156a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A variable gradient refractive index material is proposed, utilizing the controllable quadratic electro-optic coefficient distribution in single crystals of KTa1− x Nb x O3 . Abstract : Gradient refractive index (GRIN) optical materials have received substantial attention because of their applications in integrated imaging and fiber optics. The refractive index gradient of most GRIN materials cannot be adjusted after fabrication, which limits the widespread application of GRIN materials. A variable GRIN material is proposed which utilizes the controllable quadratic electro-optic coefficient distribution in single crystals of potassium tantalate niobate (KTa1− x Nb x O3 ). By using the phase diagram of KTa1− x Nb x O3, niobium composition gradient KTa1− x Nb x O3 single crystals were designed and successfully grown to achieve the gradient distribution of a quadratic electro-optic coefficient by controlling growth conditions. Based on this variable, GRIN KTa1− x Nb x O3, a novel high-speed electro-deflector, was produced.