Study of optical waveguide of barium sodium niobate films on potassium titanyl phosphate

被引：0

作者：

M.S. Zhang

P. Zhang

Z. Yin

J. Liu

机构：

[1] Center for Materials Analysis and National Laboratory of Solid State Microstructures,

[2] Nanjing University,undefined

[3] Nanjing 210093,undefined

[4] P.R. China (Fax: +86-25/3300-535,undefined

[5] E-mail: mszhang@netra.nju.edu.cn),undefined

[6] Department of Materials Science and Engineering,undefined

[7] Stanford University,undefined

[8] CA 94305,undefined

[9] USA,undefined

来源：

Applied Physics A | 1999年 / 69卷

关键词：

PACS: 42.82.Et; 68.55.Jk; 81.15.Fg;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Barium sodium niobate (BSN) optical waveguide films were grown on potassium titanyl phosphate (KTP) substrate by pulsed laser deposition (PLD). X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray pole spectroscopy, and X-ray photoelectron spectroscopy (XPS) showed that the as-grown BSN films are epitaxially smooth, fine-particled and show small constituent deviation. Both m lines of the waveguided TE and TM modes were recorded. Lattice match between the BSN(110) and both the KTP(001) and KTP(100) planes is examined with mismatch less than 3%. Effective refractive indices as a function of incident wavelength and order of the waveguided modes are studied. A phase matching relationship of k(1)−2k(0)=0 is established between the first-order and fundamental modes in the BSN/KTP waveguided system. Effective thicknesses for TE and TM modes were obtained to be equal to 0.76 and 0.72 μm, respectively, larger than the thickness of the as-grown BSN film of 0.60 μm. A constituent ratio of Ba:Na:Nb in the BSN film measured was equal to 2:0.82:5.14, slightly deviating from the stoichiometric ratio of 2:1:5, which is attributed to higher relative asymptotic velocity for Nb species and higher evaporation pressure for Na species. Finally, the main factors affecting quality of the as-grown BSN films are also discussed.

引用

页码：389 / 395

页数：6