Document Type

Journal Article

Department/Unit

Department of Physics

Title

Effect of lanthanum doping on linear and nonlinear-optical properties of Bi3TiNbO9 thin films

Language

English

Abstract

Lanthanum doped Bi3TiNbO9 thin films (LBTN-x, La 3+ contents x = 5%, 15%, 25% and 35 mol.%) with layered perovskite structure were fabricated on fused silica by pulsed laser deposition method. Their linear and nonlinear optical properties were studied by transmittance measurement and Z-Scan method. All films exhibit good transmittance (>55%) in visible region. For lanthanum doping content are x = 5%, 15% and 25 mol.%, the nonlinear absorption coefficient of LBTN-x thin films increases with the La 3+ content, then it drops down at x = 35 mol.% when the content of La3+ in (Bi2O2)2+ layers is high enough to aggravate the orthorhombic distortion of the octahedra. We found that, 25 mol.% is the optimal La3+ content for LBTN-x thin films to have the largest nonlinear absorption coefficient making the LBTN-x film a promising candidate for absorbing-type optical device applications. © 2011 Elsevier B.V.

Keywords

Lanthanum doped Bi3TiNbO 9, Nonlinear optical absorption, Optical constant, Pulsed laser deposition

Publication Date

2011

Source Publication Title

Journal of Alloys And Compounds

Volume

509

Issue

17

Start Page

5364

End Page

5367

Publisher

Elsevier

DOI

10.1016/j.jallcom.2011.02.048

This document is currently not available here.

Share

COinS